Java 使用线程在固定时间间隔上调用函数
我想在特定的时间间隔调用我的函数。现在我的时间间隔定为1分钟。我有以下代码示例： Timer.javaJava 使用线程在固定时间间隔上调用函数,java,multithreading,swing,timer,java-threads,Java,Multithreading,Swing,Timer,Java Threads,我想在特定的时间间隔调用我的函数。现在我的时间间隔定为1分钟。我有以下代码示例： Timer.java import java.util.Date; import java.util.logging.Level; import java.util.logging.Logger; public class Timer implements Runnable{ public static volatile boolean isRunning = true; @Override
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Timer implements Runnable{
public static volatile boolean isRunning = true;
@Override
public void run() {
while (isRunning) {
if(Thread.currentThread().getName().equals("TimerThread")){
System.out.println("Start Time "+new Date());
try {
test();
Thread.sleep(60000);
} catch (InterruptedException ex) {
Logger.getLogger(Timer.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("End Time "+new Date());
}
}
}
public void test(){
System.out.println("Call Test ===========================> "+new Date());
}
}
import java.awt.event.ItemEvent;
import java.util.Date;
public class NewJFrame extends javax.swing.JFrame {
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jToggleButton1 = new javax.swing.JToggleButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jToggleButton1.setText("Start");
jToggleButton1.addItemListener(new java.awt.event.ItemListener() {
public void itemStateChanged(java.awt.event.ItemEvent evt) {
jToggleButton1ItemStateChanged(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(162, 162, 162)
.addComponent(jToggleButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(138, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(129, 129, 129)
.addComponent(jToggleButton1)
.addContainerGap(142, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jToggleButton1ItemStateChanged(java.awt.event.ItemEvent evt) {
// TODO add your handling code here:
if(evt.getStateChange() == ItemEvent.SELECTED){
jToggleButton1.setText("Stop");
timer = new Timer();
timer.isRunning = true;
timerThread = new Thread(timer);
timerThread.setName("TimerThread");
timerThread.start();
}else{
jToggleButton1.setText("Start");
timer.isRunning = false;
System.out.println("Stop Time ===============> "+new Date());
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
public Timer timer;
public Thread timerThread;
// Variables declaration - do not modify
private javax.swing.JToggleButton jToggleButton1;
// End of variables declaration
}
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Timer implements Runnable{
public static volatile boolean isRunning = true;
@Override
public void run() {
while (isRunning) {
if(Thread.currentThread().getName().equals("TimerThread")){
System.out.println("Start Time "+new Date());
try {
test();
Thread.sleep(60000);
} catch (InterruptedException ex) {
Logger.getLogger(Timer.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("End Time "+new Date());
}
}
}
public void test(){
System.out.println("Call Test ===========================> "+new Date());
}
}
import java.awt.event.ItemEvent;
import java.util.Date;
public class NewJFrame extends javax.swing.JFrame {
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jToggleButton1 = new javax.swing.JToggleButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jToggleButton1.setText("Start");
jToggleButton1.addItemListener(new java.awt.event.ItemListener() {
public void itemStateChanged(java.awt.event.ItemEvent evt) {
jToggleButton1ItemStateChanged(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(162, 162, 162)
.addComponent(jToggleButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(138, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(129, 129, 129)
.addComponent(jToggleButton1)
.addContainerGap(142, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jToggleButton1ItemStateChanged(java.awt.event.ItemEvent evt) {
// TODO add your handling code here:
if(evt.getStateChange() == ItemEvent.SELECTED){
jToggleButton1.setText("Stop");
timer = new Timer();
timer.isRunning = true;
timerThread = new Thread(timer);
timerThread.setName("TimerThread");
timerThread.start();
}else{
jToggleButton1.setText("Start");
timer.isRunning = false;
System.out.println("Stop Time ===============> "+new Date());
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
public Timer timer;
public Thread timerThread;
// Variables declaration - do not modify
private javax.swing.JToggleButton jToggleButton1;
// End of variables declaration
}
Start Time Sat Aug 08 10:45:01 IST 2015
Call Test ===========================> Sat Aug 08 10:45:01 IST 2015
End Time Sat Aug 08 10:46:01 IST 2015
Start Time Sat Aug 08 10:46:01 IST 2015
Call Test ===========================> Sat Aug 08 10:46:01 IST 2015
Stop Time ===============> Sat Aug 08 10:46:31 IST 2015
Start Time Sat Aug 08 10:45:01 IST 2015
Call Test ===========================> Sat Aug 08 10:45:01 IST 2015
End Time Sat Aug 08 10:46:01 IST 2015
Start Time Sat Aug 08 10:46:01 IST 2015
Call Test ===========================> Sat Aug 08 10:46:01 IST 2015
Stop Time ===============> Sat Aug 08 10:46:31 IST 2015
任何人都可以帮助我，我如何使用线程在固定时间间隔调用任何函数，就像我单击开始按钮一样，等待2分钟后，我的线程将启动并调用函数。2分钟后再次调用我的函数并重复循环。如果单击“停止”按钮，线程将停止，直到使用“开始”按钮启动线程。正确答案是：不要使用
线程。根据您希望线程执行的操作，使用计时器
、旋转计时器
或调度执行器服务
要回答实际问题，请选中isRunning
，并在睡眠完成后立即退出。如果需要，您还可以向线程发送中断，使睡眠立即停止。简短回答是，更好的回答，使用Swing计时器
您的问题到底是什么？你的代码有什么问题？你期望发生什么而不是看到什么？当我停止线程时，那么为什么在00:00:30秒后调用函数呢？根据你发布的输出，它没有。停止线程，在输出中获得停止时间，仅此而已。如果这是错误的，发布您的所有输出。当我停止我的线程时，然后按如下方式输出：停止时间=================>2015年8月8日星期六10:46:31 IST，但当在00:00:30秒后停止线程时，我会得到以下输出：开始时间星期六8月8日10:47:01 IST 2015调用测试==========================>2015年8月8日星期六10:47:01 IST平均线程在00:00:30秒