我尝试过Timer和TimerTask，但他们没有工作。它只是at com.dankrushen.mojangservicechecker.MojangServiceChecker.<init>(MojangServiceChecker.java:107)，这显然意味着第107行出现错误。该行是激活计时器的行。我不知道为什么它会给出错误，但这里的代码是没有时间的，有没有可能的方法可以在其中添加计时器？只是为了让你知道我是一个平庸的编码员，但这是我尝试的第一个gui。
package com.dankrushen.mojangservicechecker;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.TimerTask;
import javax.swing.JSlider;
import javax.swing.JLabel;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
public class MojangServiceChecker extends TimerTask {
private JFrame frmMinecraftServiceChecker;
/**
* Launch the application.
*/
int refreshInt;
String timeSetting;
String settings;
double timesOpened = 0;
JLabel status = new JLabel();
static ClassExecutingTask executingTask = new ClassExecutingTask();
public String refreshStatus() {
RefreshStatus cbeta = new RefreshStatus();
String returned = cbeta.refreshStatus(); //?
return returned;
}
public int readSettings(){
int Number;
File file = new File("MSC-Settings.txt");
if(!file.exists()){
System.out.print("\nCreating file...");
try {
file.createNewFile();
} catch (IOException e1) {
e1.printStackTrace();
}
if(!file.exists()){
System.out.print("\nFailed to create file.");
}
else{
System.out.print("\nCreated file successfully!");
System.out.print("\nTrying to write to file...\n");
try {
PrintWriter out;
out = new PrintWriter("MSC-Settings.txt");
out.println("10");
out.close();
} catch (FileNotFoundException e2) {
e2.printStackTrace();
System.out.print("\nGiving up writing to file.");
}
}
}
try(BufferedReader br = new BufferedReader(new FileReader("MSC-Settings.txt"))) {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append(System.lineSeparator());
line = br.readLine();
}
String everything = sb.toString();
everything = everything.replace("\uFEFF", "");
double everything2 = Double.parseDouble(everything);
Number = (int) everything2;
return Number;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return 10;
}
public static void main(String[] args) {
executingTask.start();
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MojangServiceChecker window = new MojangServiceChecker();
window.frmMinecraftServiceChecker.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public MojangServiceChecker() {
initialize();
}
private void screen2() throws FileNotFoundException, IOException {
frmMinecraftServiceChecker = new JFrame();
frmMinecraftServiceChecker.setTitle("Settings");
frmMinecraftServiceChecker.setResizable(false);
frmMinecraftServiceChecker.setBounds(100, 100, 450, 300);
frmMinecraftServiceChecker.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
frmMinecraftServiceChecker.getContentPane().setLayout(null);
frmMinecraftServiceChecker.setVisible (true);
final JLabel lblNewLabel = new JLabel("Current Setting: " + "10" + " Seconds");
lblNewLabel.setBounds(14, 42, 173, 14);
frmMinecraftServiceChecker.getContentPane().add(lblNewLabel);
final JSlider slider = new JSlider();
slider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
refreshInt = slider.getValue();
if (refreshInt < 2){
timeSetting = " Second";
}
else timeSetting = " Seconds";
lblNewLabel.setText("Current Setting: " + refreshInt + timeSetting);
}
});
slider.setValue(readSettings());
slider.setMinimum(1);
slider.setMaximum(120);
slider.setBounds(10, 11, 241, 20);
frmMinecraftServiceChecker.getContentPane().add(slider);
JLabel lblRefreshInterval = new JLabel("Refresh Interval in Seconds");
lblRefreshInterval.setBounds(261, 11, 173, 20);
frmMinecraftServiceChecker.getContentPane().add(lblRefreshInterval);
JButton btnClose = new JButton("Cancel");
btnClose.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
frmMinecraftServiceChecker.setVisible (false);
initialize();
}
});
btnClose.setBounds(180, 238, 89, 23);
frmMinecraftServiceChecker.getContentPane().add(btnClose);
frmMinecraftServiceChecker.setVisible (true);
JButton btnApply = new JButton("Apply");
btnApply.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
try {
PrintWriter out;
System.out.print("\nWriting to settings file.");
out = new PrintWriter("MSC-Settings.txt");
out.println(refreshInt);
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
System.out.print("\nCreating file...");
File file = new File("MSC-Settings.txt");
try {
file.createNewFile();
} catch (IOException e1) {
e1.printStackTrace();
}
if(!file.exists()){
System.out.print("\nFailed to create file.");
}
else{
System.out.print("\nCreated file successfully!");
System.out.print("\nTrying to write to file again...");
try {
PrintWriter out;
out = new PrintWriter("MSC-Settings.txt");
out.println(refreshInt);
out.close();
} catch (FileNotFoundException e2) {
e2.printStackTrace();
System.out.print("\nGiving up writing to file.");
}
}
}
frmMinecraftServiceChecker.setVisible (false);
executingTask.start();
initialize();
}
});
btnApply.setBounds(268, 238, 89, 23);
frmMinecraftServiceChecker.getContentPane().add(btnApply);
JButton btnReset = new JButton("Reset");
btnReset.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
slider.setValue(10);
}
});
btnReset.setBounds(92, 238, 89, 23);
frmMinecraftServiceChecker.getContentPane().add(btnReset);
}
/**
* Initialize the contents of the frame.
*/
public void setNames(String namestring){
}
private void initialize() {
frmMinecraftServiceChecker = new JFrame();
frmMinecraftServiceChecker.setTitle("Minecraft Service Checker");
frmMinecraftServiceChecker.setResizable(false);
frmMinecraftServiceChecker.setBounds(100, 100, 450, 300);
frmMinecraftServiceChecker.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frmMinecraftServiceChecker.getContentPane().setLayout(null);
frmMinecraftServiceChecker.setVisible (true);
if(timesOpened < 3){
frmMinecraftServiceChecker.setVisible (false);
timesOpened = timesOpened+1;
}
else frmMinecraftServiceChecker.setVisible (true);
JButton btnNewButton = new JButton("Settings");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
frmMinecraftServiceChecker.setVisible (false);
try {
screen2();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
btnNewButton.setBounds(180, 238, 89, 23);
frmMinecraftServiceChecker.getContentPane().add(btnNewButton);
status.setText(refreshStatus());
status.setBounds(10, 11, 424, 144);
frmMinecraftServiceChecker.getContentPane().add(status);
JButton temp = new JButton("Temp");
temp.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
frmMinecraftServiceChecker.setVisible (false);
}
});
temp.setBounds(10, 238, 70, 23);
frmMinecraftServiceChecker.getContentPane().add(temp);
}
public void run() {
status.setText(refreshStatus());
}
}
然后是第二节课：
package com.dankrushen.mojangservicechecker;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
public class RefreshStatus{
String ResponseName;
String v1;
String v2;
String v3;
String v4;
String v5;
String v6;
String v7;
String v8;
String v9;
public String[] mojangStatus(){
try {
v1 = getStatus("\"minecraft.net\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v2 = getStatus("\"session.minecraft.net\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v3 = getStatus("\"account.mojang.com\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v4 = getStatus("\"auth.mojang.com\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v5 = getStatus("\"skins.minecraft.net\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v6 = getStatus("\"authserver.mojang.com\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v7 = getStatus("\"sessionserver.mojang.com\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v8 = getStatus("\"api.mojang.com\"");
} catch (IOException e) {
e.printStackTrace();
}
try {
v9 = getStatus("\"textures.minecraft.net\"");
} catch (IOException e) {
e.printStackTrace();
}
String[] all = new String[(9)];
all[(0)] = v1;
all[(1)] = v2;
all[(2)] = v3;
all[(3)] = v4;
all[(4)] = v5;
all[(5)] = v6;
all[(6)] = v7;
all[(7)] = v8;
all[(8)] = v9;
return all;
}
public String getStatus(String LookupName) throws IOException {
URL url = new URL("http://status.mojang.com/check");
BufferedReader in = new BufferedReader(
new InputStreamReader(
url.openStream()));
ResponseName = in.readLine();
String FinalCheck = LookupName + ":\"green\"";
if(ResponseName.contains(FinalCheck)) {
return "<font color = \"008000\">This service is healthy.</font>";
}
FinalCheck = LookupName + ":\"yellow\"";
if(ResponseName.contains(FinalCheck)) {
return "<font color = \"FFD700\">This service is shaky.</font>";
}
FinalCheck = LookupName + ":\"red\"";
if(ResponseName.contains(FinalCheck)) {
return "<font color = \"FF0000\">This service is offline.</font>";
}
in.close();
return "Unknown/No Response.";
}
public String refreshStatus(){
String[] list = mojangStatus();
String display = "<html>minecraft.net: " + list[(0)] + "<br/>session.minecraft.net: " + list[(1)] + "<br/>account.mojang.com: " + list[(2)] + "<br/>auth.mojang.com: " + list[(3)] + "<br/>skins.minecraft.net: " + list[(4)] + "<br/>authserver.mojang.com: " + list[(5)] + "<br/>sessionserver.mojang.com: " + list[(6)] + "<br/>api.mojang.com: " + list[(7)] + "<br/>textures.minecraft.net: " + list[(8)] + "</html>";
System.out.print("\n" + display);
return display;
}
}
然后是第三节课：
package com.dankrushen.mojangservicechecker;
import java.util.Date;
import java.util.Timer;
public class ClassExecutingTask {
public int readSettings() {
MojangServiceChecker cbeta = new MojangServiceChecker();
int returnint = cbeta.readSettings(); //?
return returnint;
}
long delay = readSettings()*1000; // delay in milliseconds
MojangServiceChecker task = new MojangServiceChecker();
Timer timer = new Timer("timer");
public void start() {
timer.cancel();
timer = new Timer("timer");
delay = readSettings()*1000; // delay in milliseconds
Date executionDate = new Date(); // no params = now
timer.scheduleAtFixedRate(task, executionDate, delay);
}
}
编辑：我已经开始工作，但我无法重新安排计时器。我知道它是因为取消使得它无法重启以及打开4个窗口而不是1，我不知道为什么会发生这种情况，但我还添加了一个新的计时器。我也知道有一个更新的东西，而不是使用Timer，但我无论如何使用它都无论如何使用它，无论我看多少东西ScheduledThreadPoolExecutor。但它给了我错误（PS我也更新了类文件！）：
Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: Task already scheduled or cancelled
at java.util.Timer.sched(Unknown Source)
at java.util.Timer.schedule(Unknown Source)
at com.dankrushen.mojangservicechecker.ClassExecutingTask.start(ClassExecutingTask.java:22)
at com.dankrushen.mojangservicechecker.MojangServiceChecker$4.actionPerformed(MojangServiceChecker.java:191)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$300(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
答案 0 :(得分：0)
您说Timer无效，但您没有提供代码，因此无法确定导致错误的原因。我将向您展示我的工作Timer的样子。
// Here's an action that will be called every timer event
public class MyTimerAction extends AbstractAction {
// You may need a target here to access the actual
// method you wish to invoke.
// ...
@Override
public void actionPerformed(ActionEvent e) {
// code to be performed
}
}
// Here's the Timer class
public class MyTimer extends Timer {
// The action invoked by the timer.
private MyTimerAction action;
public MyTimer(int delay, ActionListener listener) {
super(delay, listener);
action = (MyTimerAction)listener;
//...
}
}
这应该适用于计时器。您必须进行适当的更改才能适用于您的方案。
答案 1 :(得分：0)
我想要一种非常容易和快速改变间隔的方法，而不是使用计时器，而不一定准确，但只是让它工作。所以我决定只创建一个新线程，并使用sleep并检查每次从配置之间的延迟应该是什么，为了进入配置屏幕，它将只是杀死线程并且每次都创建一个新线程。