public static MyClass {
    private static volatile ProcessManager singleton = null;
    
    public static ProcessManager getInstance() throws Exception {
        if (singleton == null) {
            synchronized (MyClass.class) {
                if (singleton == null) {
                    singleton = new ProcessManager();
                }
            }
        }
        return singleton;
    }
}

The double-checking was invented prior to Java5.

The purpose is if the field isn't null, you don't have to synchronize. But since the java memory model specification was cleaned up and Synchronize/Volatile were given much better specification and semantics it is totally useless boilerplate that you should only write if you have to support Java4. There is a Google Tech Talk that covers this.

By cody, 2017-12-12 08:02:01
 private void EnableGPSAutoMatically() {
        GoogleApiClient googleApiClient = null;
        if (googleApiClient == null) {
            oogleApiClient = new GoogleApiClient.Builder(this)
                    .addApi(LocationServices.API).addConnectionCallbacks(this)
                    .addOnConnectionFailedListener(this).build();
            /* about 50 lines of code were here ... 
             * all depends on this if statement ... !
             * Actually the whole method depends on this if statement ! */
                    }
                }
            });
        }
}

what if that mysterious power change it to be not null !! It gonna be a holly object and You should not "new" it anymore ?! damn ... :)))

By Anonymous, 2018-03-28 11:31:15
try{
    //...
    getMyDataFromServer();
    //...
}catch(Excepion e){
    // :D
}

HMM FIXED BUG!

By H20, 2017-12-23 11:12:50

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }

        fileObjectDAO = new FileObjectDAO(this);
        iv = (ImageView)findViewById(R.id.imageView);
        tv = (TextView)findViewById(R.id.textView);
        centerImageView = (ImageButton)findViewById(R.id.imageButton);
        leftText = (TextView)findViewById(R.id.textView2);
        rightText = (TextView)findViewById(R.id.textView3);
        leftArrow = (TextView)findViewById(R.id.textView4);
        rightArrow =  (TextView)findViewById(R.id.textView9);
        leftCancel = (ImageButton)findViewById(R.id.imageButton2);
        displayWelcome1  = (TextView)findViewById(R.id.textView5);
        displayWelcome2  = (TextView)findViewById(R.id.textView6);
        rightCancel = (ImageButton)findViewById(R.id.imageButton3);

        seatButton = (ImageButton)findViewById(R.id.imageButton4);
        waitButton = (ImageButton)findViewById(R.id.imageButton5);
        clearButton = (ImageButton)findViewById(R.id.imageButton6);
        enityButton = (ImageButton)findViewById(R.id.imageButton7);
        bookButton = (ImageButton)findViewById(R.id.imageButton8);
        settingButton = (ImageButton)findViewById(R.id.imageButton9);

        displatSeat = (TextView)findViewById(R.id.textView7);
        displatSeatNumber = (TextView)findViewById(R.id.textView8);
        isClearing = false;
        hidenAll();
        key1 = 0;
        key2 = 0;
        key3 = 0;

        isError = false;
        isWaiting = false;

        myTTS = new TapiaTTS(this);
        myhandler = new Tapiahandler();
        mySTT = new TapiaSTT(this,myhandler,false);
        isResume = false;
        tapiaAnimation = new TapiaAnimation(this);

        liveData.add("愛媛");
        liveData.add("松山");
        liveData.add("今治");
        liveData.add("高知");
        liveData.add("福岡");
        liveData.add("北九州");
        liveData.add("佐賀");
        liveData.add("長崎");
        liveData.add("熊本");
        liveData.add("大分");
        liveData.add("別府");
        liveData.add("宮崎");
        liveData.add("高千穂");
        liveData.add("鹿児島");
        liveData.add("奄美大島");
        liveData.add("屋久島");
        liveData.add("沖縄");
        liveData.add("那覇");
        liveData.add("北海道");
        liveData.add("札幌");
        liveData.add("函館");
        liveData.add("室蘭");
        liveData.add("浦河");
        liveData.add("旭川");
        liveData.add("留萌");
        liveData.add("稚内");
        liveData.add("網走");
        liveData.add("帯広");
        liveData.add("登別");
        liveData.add("知床");
        liveData.add("釧路");
        liveData.add("根室");
        liveData.add("青森");
        liveData.add("岩手");
        liveData.add("盛岡");
        liveData.add("秋田");
        liveData.add("宮城");
        liveData.add("仙台");
        liveData.add("松島");
        liveData.add("泉");
        liveData.add("登米");
        liveData.add("佐沼");
        liveData.add("山形");
        liveData.add("福島");
        liveData.add("郡山");
        liveData.add("茨城");
        liveData.add("水戸");
        liveData.add("栃木");
        liveData.add("日光");
        liveData.add("宇都宮");
        liveData.add("群馬");
        liveData.add("前橋");
        liveData.add("高崎");
        liveData.add("埼玉");
        liveData.add("千葉");
        liveData.add("成田");
        liveData.add("木更津");
        liveData.add("船橋");
        liveData.add("松戸");
        liveData.add("東京");
        liveData.add("銀座");
        liveData.add("浅草");
        liveData.add("池袋");
        liveData.add("上野");
        liveData.add("新宿");
        liveData.add("渋谷");
        liveData.add("品川");
        liveData.add("巣鴨");
        liveData.add("八王子");
        liveData.add("神奈川");
        liveData.add("横浜");
        liveData.add("川崎");
        liveData.add("横須賀");
        liveData.add("相模原");
        liveData.add("山梨");
        liveData.add("甲府");
        liveData.add("新潟");
        liveData.add("佐渡");
        liveData.add("富山");
        liveData.add("石川");
        liveData.add("金沢");
        liveData.add("福井");
        liveData.add("長野");
        liveData.add("軽井沢");
        liveData.add("松本");
        liveData.add("岐阜");
        liveData.add("飛騨高山");
        liveData.add("静岡");
        liveData.add("富士");
        liveData.add("浜松");
        liveData.add("愛知");
        liveData.add("名古屋");
        liveData.add("三重");
        liveData.add("伊勢");
        liveData.add("津");
        liveData.add("滋賀");
        liveData.add("大津");
        liveData.add("京都");
        liveData.add("大阪");
        liveData.add("堺");
        liveData.add("東大阪");
        liveData.add("兵庫");
        liveData.add("神戸");
        liveData.add("姫路");
        liveData.add("奈良");
        liveData.add("和歌山");
        liveData.add("鳥取");
        liveData.add("島根");
        liveData.add("出雲");
        liveData.add("松江");
        liveData.add("岡山");
        liveData.add("広島");
        liveData.add("福山");
        liveData.add("山口");
        liveData.add("下関");
        liveData.add("徳島");
        liveData.add("香川");
        liveData.add("高松");
        try {
            SN = getSerialNumber();
        }catch (Exception e){
            SN = "mji123456";
        }
//
        Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
            @Override
            public void uncaughtException(Thread paramThread, Throwable paramThrowable) {
                myHandaling(paramThread, paramThrowable);
            }
        });
        
        
        connectFtp();

        tapiaGet = new TapiaGetJson();
        setWalkpaper();

//        longPressRunnable = new Runnable() {
//            public void run() {
//                if(currentMode.equalsIgnoreCase("talk")){
//                    myTTS.stopSpeak();
//                    mySTT.stop();
//                    checkHandler98_BLUE.removeCallbacks(checkRunnable98_BLUE);
//                    isListen = false;
//                    tapiaAnimation.playColor1(1);
//                    String [] SpeakArray = {"またあとでね", "またね", "あとでね", "ちょっとひとやすみ", "休憩するね"};
//                    Random ran = new Random();
//                    int index = ran.nextInt(SpeakArray.length);
//                    String toSpeak = SpeakArray[index];
//                    //Toast.makeText(getApplicationContext(), toSpeak,Toast.LENGTH_SHORT).show();
//                    myTTS.TapiaSpeak(toSpeak);
//                    //iv.setImageResource(R.drawable.black);
//                    myTTS.player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
//
//                        @Override
//                        public void onCompletion(MediaPlayer mp) {
////                                Intent intent = new Intent(context, StartActivity.class);
////                                startActivity(intent);
//                            count98 =0;
//                            checkStateHander.postDelayed(checkStateRunnable,5000);
//                            handler98.postDelayed(runnable98,800);
//                            setSleepMode();
//                        }
//
//                    });
//                }else if(currentMode.equalsIgnoreCase("sleep")){
//                    setTalkingMode();
//                    checkStateHander.removeCallbacks(checkStateRunnable);
//                    handler98.removeCallbacks(runnable98);
//                    needForHelp("なにかご用ですか?");
//                }
//            }
//        };
//

        createDirIfNotExists("/sdcard/TapiaData/Send/");
        createDirIfNotExists("/sdcard/TapiaData/Receive/");
 public void run() {

                Log.d("Tapia","Check 98");

                if(count98==0){


                    boolean check = false;
                    boolean check2 = false;
                    String path = "/Tapia/"+seatNumber+"/";
                    allFileName = ftpPrintFilesList(path);
                    if(allFileName.size()==0){


                    }else{
                        for(String filename :allFileName){

                            if(filename.endsWith("98.trg")){

                                if(!fileObjectDAO.checkFileExit(filename)){
                                    fileObjectDAO.addFile(filename);
                                    isDelete = true;
                                    check = true;
                                    Log.e("checking","98");
                                    ftpDownload(path + filename, "/sdcard/TapiaData/Receive/" + filename);
                                    break;
                                }
                            }
                        }

                    }

                    if(!check){
                        path = "/Tapia/ALL/";
                        allFileName = ftpPrintFilesList(path);
                        if(allFileName.size()==0){


                        }else{
                            for(String filename :allFileName){

                                if(filename.endsWith("98.trg")){

                                    if(!fileObjectDAO.checkFileExit(filename)){
                                        fileObjectDAO.addFile(filename);
                                        isDelete = true;
                                        check2 = true;
                                        ftpDownload(path+filename,"/sdcard/TapiaData/Receive/"+filename);
                                        break;
                                    }
                                }
                            }

                        }


                    }
                        count98++;
                        handler98.postDelayed(this, 1000);

                }else{
                    count98++;
                    if(count98==10)count98=0;
                    handler98.postDelayed(this, 1000);
                }

            }
        };


Trust me it works!!!

PS. This is 300 out of 3000 lines from one Class

By SIMON WONG , 2018-08-20 10:19:44
private HashMap<String, Tuple6<float[], String[], String[], String[], String[], String>> memberNameChangedToProtectTheInnocent = null;
By Anonymous, 2017-12-12 12:13:22
public void sleep(long duration) {
    long start = System.currentTimeMillis();
    while(true) {
        if (System.currentTimeMillis() - start >= duration)
            break;
    }
}
By imaN NeO, 2018-10-28 09:35:15
switch (kafkaStreams.state()) {
                case RUNNING: {
                    if (kafkaStreams.state().isRunning()) {
                        countDownLatch.countDown();
                    }
                }
                break;
By Anonymous, 2018-07-05 18:05:59
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.


   O | O | O 
  -----------
   O | O | O 
  -----------
   O | O | O 
     

 */
package tictactoe;

import java.util.Scanner;

public class TicTacToe {

    /**
     * @param args the command line arguments
     * @throws java.lang.InterruptedException
     */
    public static void main(String[] args) throws InterruptedException {
        Scanner input = new Scanner(System.in);
        String a1 = "1";
        String a2 = "2";
        String a3 = "3";
        String a4 = "4";
        String a5 = "5";
        String a6 = "6";
        String a7 = "7";
        String a8 = "8";
        String a9 = "9";
        int inO;
        int inX = 0;
        boolean winner = false;
        PrintBoard(a1,a2,a3,a4,a5,a6,a7,a8,a9);
        System.out.printf("How to play - wait for your turn and when it comes write the number of the field that you want to draw in (from 1 to 9)\n");
        System.out.printf("Player O's turn: ");
        inO = input.nextInt();
        while (true) {
            switch (inO) {
                case 1:
                    if (a1 == "1") {
                        a1 = "O";
                    }
                    break;
                case 2:
                    if (a2 == "2") {
                    a2 = "O";
                    }
                    break;
                case 3:
                    if (a3 == "3") {
                    a3 = "O";
                    }
                    break;
                case 4:
                    if (a4 == "4") {
                    a4 = "O";
                    }
                    break;
                case 5:
                    if (a5 == "5") {
                    a5 = "O";
                    }
                    break;
                case 6:
                    if (a6 == "6") {
                    a6 = "O";
                    }
                    break;
                case 7:
                    if (a7 == "7") {
                    a7 = "O";
                    }
                    break;
                case 8:
                    if (a8 == "8") {
                    a8 = "O";                        
                    }
                    break;
                case 9:
                    if (a9 == "9") {
                    a9 = "O";
                    }
                    break;
                default:
                    System.out.printf("An error occured. Please accept it politely and restart the game.");
                    break;
            }
            System.out.printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
            if (null != Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9))switch (Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9)) {
                case "NONE":
                    if (a1 != "1" && a2 != "2" && a3 != "3" && a4 != "4" && a5 != "5" && a6 != "6" && a7 != "7" && a8 != "8" && a9 != "9") {
                        winner = true;
                        System.out.println("DRAW!");
                        Thread.sleep(3000);
                        break;
                    } else {
                    PrintBoard(a1,a2,a3,a4,a5,a6,a7,a8,a9);
                    System.out.printf("Player X's turn: ");
                    inX = input.nextInt();
                    break;
                    }
                case "X":
                    winner = true;
                    System.out.println("X HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                case "O":
                    winner = true;
                    System.out.printf("O HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                default:
                    break;
            }
            if (winner) {
                break;
            }
            switch (inX) {
                case 1:
                    if (a1 == "1") {
                    a1 = "X";
                    }
                    break;
                case 2:
                    if (a2 == "2") {
                    a2 = "X";
                    }
                    break;
                case 3:
                    if (a3 == "3") {
                    a3 = "X";
                    }
                    break;
                case 4:
                    if (a4 == "4") {
                    a4 = "X";
                    }
                    break;
                case 5:
                    if (a5 == "5") {
                    a5 = "X";
                    }
                    break;
                case 6:
                    if (a6 == "6") {
                    a6 = "X";
                    }
                    break;
                case 7:
                    if (a7 == "7") {
                    a7 = "X";
                    }
                    break;
                case 8:
                    if (a8 == "8") {
                    a8 = "X";
                    }
                    break;
                case 9:
                    if (a9 == "9") {
                    a9 = "X";
                    }
                    break;
                default:
                    System.out.printf("An error occured. Please accept it politely and restart the game.");
                    break;
            }
            System.out.printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
            if (null != Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9))switch (Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9)) {
                case "NONE":
                    if (a1 != "1" && a2 != "2" && a3 != "3" && a4 != "4" && a5 != "5" && a6 != "6" && a7 != "7" && a8 != "8" && a9 != "9") {
                        winner = true;
                        System.out.println("DRAW!");
                        Thread.sleep(3000);
                        break;
                    } else {
                    PrintBoard(a1,a2,a3,a4,a5,a6,a7,a8,a9);
                    System.out.printf("Player O's turn: ");
                    inO = input.nextInt();
                    break;
                    }
                case "X":
                    winner = true;
                    System.out.println("X HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                case "O":
                    winner = true;
                    System.out.println("O HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                default:
                    break;
            }
            if (winner) {
                break;
            }
        }    
    }
    
    public static void PrintBoard(String f1, String f2, String f3, String f4, String f5, String f6, String f7, String f8, String f9) {  
        System.out.printf("   %s | %s | %s \n",f1,f2,f3);
        System.out.printf("  ----------- \n");
        System.out.printf("   %s | %s | %s \n",f4,f5,f6);
        System.out.printf("  ----------- \n");
        System.out.printf("   %s | %s | %s \n",f7,f8,f9);
        System.out.printf(" \n");
    }
    
    public static String Winners(String f1, String f2, String f3, String f4, String f5, String f6, String f7, String f8, String f9) {
        if (f1 == f2 && f2 == f3 && f3 == "O") {
            return "O";
        } else if (f4 == f5 && f5 == f6 && f6 == "O") {
            return "O";
        } else if (f7 == f8 && f8 == f9 && f9 == "O") {
            return "O";
        } else if (f1 == f4 && f4 == f7 && f7 == "O") {
            return "O";
        } else if (f2 == f5 && f5 == f8 && f8 == "O") {
            return "O";
        } else if (f3 == f6 && f6 == f9 && f9 == "O") {
            return "O";
        } else if (f1 == f5 && f5 == f9 && f9 == "O") {
            return "O";
        } else if (f3 == f5 && f5 == f7 && f7 == "O") {
            return "O";
        } else if (f1 == f2 && f2 == f3 && f3 == "X") {
            return "X";
        } else if (f4 == f5 && f5 == f6 && f6 == "X") {
            return "X";
        } else if (f7 == f8 && f8 == f9 && f9 == "X") {
            return "X";
        } else if (f1 == f4 && f4 == f7 && f7 == "X") {
            return "X";
        } else if (f2 == f5 && f5 == f8 && f8 == "X") {
            return "X";
        } else if (f3 == f6 && f6 == f9 && f9 == "X") {
            return "X";
        } else if (f1 == f5 && f5 == f9 && f9 == "X") {
            return "X";
        } else if (f3 == f5 && f5 == f7 && f7 == "X") {
            return "X";
        } else {
            return "NONE";
        }
    }
}

There are sooo many problems with this...

By umnikos, 2017-12-12 17:27:24
public class MandateData {

    public final UUID coreId;
    public final UUID accountId;
    public final String accountRef;
    public final String creditorId;
    public final String creditorName;
    public final String debtorFirstName;
    public final String debtorLastName;
    public final String branchCode;
    public final String accountNumber;
    public final LocalDate signingDate;
    public final Address debtorAddress;

    private MandateData(UUID coreId, UUID accountId, String accountRef, String creditorId, String creditorName, String branchCode, String accountNumber, String debtorFirstName, String debtorLastName,
                        LocalDate signingDate, Address debtorAddress) {
        this.coreId = coreId;
        this.accountId = accountId;
        this.accountRef = accountRef;
        this.creditorId = creditorId;
        this.creditorName = creditorName;
        this.debtorFirstName = debtorFirstName;
        this.debtorLastName = debtorLastName;
        this.branchCode = branchCode;
        this.accountNumber = accountNumber;
        this.signingDate = signingDate;
        this.debtorAddress = debtorAddress;
    }

    public static MandateData creationMandateData(UUID coreId, UUID accountId, String accountRef, String creditorId, String creditorName, String branchCode, String accountNumber, String debtorFirstName, String debtorLastName,
                                                  LocalDate signingDate, Address debtorAddress) {
        return new MandateData(coreId, accountId, accountRef, creditorId, creditorName, branchCode, accountNumber, debtorFirstName, debtorLastName, signingDate, debtorAddress);
    }
}

There is an ancient and mysterious legend about public static constructor, called createShit. If anyone want's just to create an instance of Shit be aware of it! This is too obvious! just Implement static method with the exactly the same fields, and make constructor private. Don't write a shit!

By Anonymous, 2018-06-07 13:03:44
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.


   O | O | O 
  -----------
   O | O | O 
  -----------
   O | O | O 
     

 */
package tictactoe;

import java.util.Scanner;

public class TicTacToe {

    /**
     * @param args the command line arguments
     * @throws java.lang.InterruptedException
     */
    public static void main(String[] args) throws InterruptedException {
        Scanner input = new Scanner(System.in);
        String a1 = "1";
        String a2 = "2";
        String a3 = "3";
        String a4 = "4";
        String a5 = "5";
        String a6 = "6";
        String a7 = "7";
        String a8 = "8";
        String a9 = "9";
        int inO;
        int inX = 0;
        boolean winner = false;
        PrintBoard(a1,a2,a3,a4,a5,a6,a7,a8,a9);
        System.out.printf("How to play - wait for your turn and when it comes write the number of the field that you want to draw in (from 1 to 9)\n");
        System.out.printf("Player O's turn: ");
        inO = input.nextInt();
        while (true) {
            switch (inO) {
                case 1:
                    if (a1 == "1") {
                        a1 = "O";
                    }
                    break;
                case 2:
                    if (a2 == "2") {
                    a2 = "O";
                    }
                    break;
                case 3:
                    if (a3 == "3") {
                    a3 = "O";
                    }
                    break;
                case 4:
                    if (a4 == "4") {
                    a4 = "O";
                    }
                    break;
                case 5:
                    if (a5 == "5") {
                    a5 = "O";
                    }
                    break;
                case 6:
                    if (a6 == "6") {
                    a6 = "O";
                    }
                    break;
                case 7:
                    if (a7 == "7") {
                    a7 = "O";
                    }
                    break;
                case 8:
                    if (a8 == "8") {
                    a8 = "O";                        
                    }
                    break;
                case 9:
                    if (a9 == "9") {
                    a9 = "O";
                    }
                    break;
                default:
                    System.out.printf("An error occured. Please accept it politely and restart the game.");
                    break;
            }
            System.out.printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
            if (null != Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9))switch (Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9)) {
                case "NONE":
                    if (a1 != "1" && a2 != "2" && a3 != "3" && a4 != "4" && a5 != "5" && a6 != "6" && a7 != "7" && a8 != "8" && a9 != "9") {
                        winner = true;
                        System.out.println("DRAW!");
                        Thread.sleep(3000);
                        break;
                    } else {
                    PrintBoard(a1,a2,a3,a4,a5,a6,a7,a8,a9);
                    System.out.printf("Player X's turn: ");
                    inX = input.nextInt();
                    break;
                    }
                case "X":
                    winner = true;
                    System.out.println("X HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                case "O":
                    winner = true;
                    System.out.printf("O HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                default:
                    break;
            }
            if (winner) {
                break;
            }
            switch (inX) {
                case 1:
                    if (a1 == "1") {
                    a1 = "X";
                    }
                    break;
                case 2:
                    if (a2 == "2") {
                    a2 = "X";
                    }
                    break;
                case 3:
                    if (a3 == "3") {
                    a3 = "X";
                    }
                    break;
                case 4:
                    if (a4 == "4") {
                    a4 = "X";
                    }
                    break;
                case 5:
                    if (a5 == "5") {
                    a5 = "X";
                    }
                    break;
                case 6:
                    if (a6 == "6") {
                    a6 = "X";
                    }
                    break;
                case 7:
                    if (a7 == "7") {
                    a7 = "X";
                    }
                    break;
                case 8:
                    if (a8 == "8") {
                    a8 = "X";
                    }
                    break;
                case 9:
                    if (a9 == "9") {
                    a9 = "X";
                    }
                    break;
                default:
                    System.out.printf("An error occured. Please accept it politely and restart the game.");
                    break;
            }
            System.out.printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
            if (null != Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9))switch (Winners(a1,a2,a3,a4,a5,a6,a7,a8,a9)) {
                case "NONE":
                    if (a1 != "1" && a2 != "2" && a3 != "3" && a4 != "4" && a5 != "5" && a6 != "6" && a7 != "7" && a8 != "8" && a9 != "9") {
                        winner = true;
                        System.out.println("DRAW!");
                        Thread.sleep(3000);
                        break;
                    } else {
                    PrintBoard(a1,a2,a3,a4,a5,a6,a7,a8,a9);
                    System.out.printf("Player O's turn: ");
                    inO = input.nextInt();
                    break;
                    }
                case "X":
                    winner = true;
                    System.out.println("X HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                case "O":
                    winner = true;
                    System.out.println("O HAS WON!!!");
                    Thread.sleep(3000);
                    break;
                default:
                    break;
            }
            if (winner) {
                break;
            }
        }    
    }
    
    public static void PrintBoard(String f1, String f2, String f3, String f4, String f5, String f6, String f7, String f8, String f9) {  
        System.out.printf("   %s | %s | %s \n",f1,f2,f3);
        System.out.printf("  ----------- \n");
        System.out.printf("   %s | %s | %s \n",f4,f5,f6);
        System.out.printf("  ----------- \n");
        System.out.printf("   %s | %s | %s \n",f7,f8,f9);
        System.out.printf(" \n");
    }
    
    public static String Winners(String f1, String f2, String f3, String f4, String f5, String f6, String f7, String f8, String f9) {
        if (f1 == f2 && f2 == f3 && f3 == "O") {
            return "O";
        } else if (f4 == f5 && f5 == f6 && f6 == "O") {
            return "O";
        } else if (f7 == f8 && f8 == f9 && f9 == "O") {
            return "O";
        } else if (f1 == f4 && f4 == f7 && f7 == "O") {
            return "O";
        } else if (f2 == f5 && f5 == f8 && f8 == "O") {
            return "O";
        } else if (f3 == f6 && f6 == f9 && f9 == "O") {
            return "O";
        } else if (f1 == f5 && f5 == f9 && f9 == "O") {
            return "O";
        } else if (f3 == f5 && f5 == f7 && f7 == "O") {
            return "O";
        } else if (f1 == f2 && f2 == f3 && f3 == "X") {
            return "X";
        } else if (f4 == f5 && f5 == f6 && f6 == "X") {
            return "X";
        } else if (f7 == f8 && f8 == f9 && f9 == "X") {
            return "X";
        } else if (f1 == f4 && f4 == f7 && f7 == "X") {
            return "X";
        } else if (f2 == f5 && f5 == f8 && f8 == "X") {
            return "X";
        } else if (f3 == f6 && f6 == f9 && f9 == "X") {
            return "X";
        } else if (f1 == f5 && f5 == f9 && f9 == "X") {
            return "X";
        } else if (f3 == f5 && f5 == f7 && f7 == "X") {
            return "X";
        } else {
            return "NONE";
        }
    }
}

There are so many problems with this...

By umnikos, 2017-12-12 17:38:50
private <T> Supplier<T> abort(Class<T> exception) {
  return () -> {
    try {
      return exception.newInstance();
    } catch (InstantiationException | IllegalAccessException e) {
      throw new RuntimeException(e);
    }
  };
}

...

throw abort(MyException.class).get();
By Anonymous, 2017-12-14 11:27:50
        //JSONObject input;
        
        String givenName = input.get("propName") != null ? (String)input.get("propName") : null;

WHAT DA FUCK ASSHOLES

By Anonymous, 2018-03-15 15:28:55
if (baza[mCurrentIndex] == Boolean.TRUE) {
            if (mCurrentIndex != baza.length-1) {
                up();
                nextQuestion();
            }

            if (mCurrentIndex == baza.length) {
                WypiszWynik();
            }

        }

so you have an array of booleans and you're comparing it to Boolean.TRUE why

By pain, 2017-10-31 21:58:54
Boolean b = new Boolean(true);
if (b == true){
    ...
}

think outside the autoboxing

By ktb, 2018-09-18 15:17:38

"  ".split(" ");

Very weird code found multiple times in old code base.

By heldt, 2017-12-12 12:03:14