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我有一個if語句，僅在調試模式下才會被評估Java if語句僅在調試模式下運行
MyStuff類（「main」class）;
package com.lorenjz.jambii;
import java.io.IOException;
public class MyStuff {
public static void main(String[] args)throws IOException {
ControlGack gack = new ControlGack();
gack.setVisible(true);
new Thread() {
public void run() {
MainWindow mW = new MainWindow();
mW.run();
}}.start();
Client c = new Client();
try {
c.run(null);
} catch (IOException e) {
e.printStackTrace();
}
}
}
提取RGB顏色均值爲它駐留在屏幕的窗口：
package com.lorenjz.jambii;
import java.awt.AWTException;
public class MainWindow extends JFrame implements ComponentListener, Runnable{
static int currentPixel;
static int red;
static int blue;
static int green;
private JPanel contentPane;
static JPanel panel;
static myPrefs mP;
static Boolean serverState = false;
public static class Globals{
static int screenWidth = 1366;
static int screenHeight = 768;
static int RedforSend = 0;
}
public void run() {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MainWindow frame = new MainWindow();
frame.addComponentListener(frame);
frame.setLocation(mP.getMWXPos(), mP.getMWYPos());
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}});
while (true){
Robot robot;
try {
robot = new Robot();
BufferedImage screenShot =
robot.createScreenCapture(
new Rectangle(
new Dimension(Globals.screenWidth,Globals.screenHeight)));
for (int xPosition = 0; xPosition < Globals.screenWidth; xPosition ++) {
for (int yPosition = 0; yPosition < Globals.screenHeight; yPosition++){
currentPixel = screenShot.getRGB(xPosition, yPosition);
red = red +(int) (255 & (currentPixel >> 16));
green = green + (int) (255 & (currentPixel >> 8));
blue = blue + (int) (255 & (currentPixel));
}
}
int numberOfSidePixels = Globals.screenWidth * Globals.screenHeight;
red = red /numberOfSidePixels;
green = green /numberOfSidePixels;
blue = blue /numberOfSidePixels;
Globals.RedforSend = red;
if(serverState==true){
Client.sendToServer(red,green,blue);
Client.newMessage();
}
Color background = new Color(red, green, blue);
panel.setBackground(background);
} catch (AWTException e) {
e.printStackTrace();
}
}
}
public MainWindow() {
mP = new myPrefs();
mP.init();
setBounds(100, 100, 175, 165);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
panel = new JPanel();
panel.setBounds(20, 15, 135, 115);
contentPane.add(panel);
}
void saveFrame(JFrame frame) throws IOException {
String X = String.valueOf(frame.getX());
String Y = String.valueOf(frame.getY());
int xPos = frame.getX();
mP.setMWXPos(xPos);
int yPos = frame.getY();
mP.setMWYPos(yPos);
}
@Override
public void componentHidden(ComponentEvent e) {
}
@Override
public void componentMoved(ComponentEvent e) {
System.out.println(
"componentMoved event from " + e.getComponent().getClass().getName());
try {
saveFrame((JFrame) e.getComponent());
} catch (IOException e1) {
e1.printStackTrace();
}
}
@Override
public void componentResized(ComponentEvent e) {
}
@Override
public void componentShown(ComponentEvent e) {
System.out.println(
"shown event from " + e.getComponent().getClass().getName());
}
public static void switchServerState(){
serverState = true;
}
}
終於客戶端類，我想將RGB數據轉發到服務器：
package com.lorenjz.jambii;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
public class Client {
static String fromUser;
static Boolean nm = false;
//static PrintWriter out;
public void run(String[] args) throws IOException {
Socket kkSocket = null;
PrintWriter out = null;
BufferedReader in = null;
try {
kkSocket = new Socket("LorensMBA.local", 4444);
// TODO code server for pref from controlGack text input
out = new PrintWriter(kkSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(kkSocket.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Don't know about host: LorensMBA.");
//System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for the connection to: LorensMBA.");
//System.exit(1);
}
BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
String fromServer;
while ((fromServer = in.readLine()) != null) {
System.out.println("Server: " + fromServer);
if(fromServer.equals("Ready to Go")){
System.out.print("Rockin");
out.print("myStuff");
MainWindow.switchServerState();
}
if (fromServer.equals("Bye."))
break;
//fromUser = stdIn.readLine();
//if (nm = true){
if (fromUser != null) {
System.out.println("Client: " + fromUser);
out.println(fromUser);
}
nm = false;
//}
}
out.close();
in.close();
stdIn.close();
kkSocket.close();
}
public static void sendToServer(int redV, int greenV, int blueV){
//out.println("Stupid");
fromUser = "@R"+ redV+",G"+greenV+",B"+blueV;
}
public static void newMessage(){
nm = true;
}
}
'
客戶端類中的「if（fromUser！= null）」似乎只在設置斷點時進行評估。我必須在這裏錯過一些東西。我打算全部解決這個問題的方法是，每次截圖時，MainWindow都會向客戶端類發送一個RGB值。有人能指出我出錯的方向嗎？
感謝， 羅蘭
爲什麼你傾倒了很多不是你問題的實際部分的代碼？你應該嘗試修剪它 - [SSCCE]（http://sscce.org）。 – Lion
您確定您正在調試的源代碼與您正在運行的編譯代碼具有相同的源代碼嗎？ –
您能否只在調試模式下指定執行的行？ –