import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class KeyBoardListener extends JFrame {public static void main(String[] args) throws FileNotFoundException {
new KeyBoardListener();
}
public KeyBoardListener() throws FileNotFoundException {
this.setTitle("监听键盘事件");
this.setSize(200, 50);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
this.addKeyListener(new KeyAdapter() { @Override
public void keyReleased(KeyEvent e) {
//键盘弹起后执行
char ch = e.getKeyChar();
try {
System.out.print(ch);
System.out.print(";");
}catch(Exception e1)
{
System.out.println(e1);
}
}
}
);
}
}
这句:char ch = e.getKeyChar(); 可以返回字符和数字,但按F2时返回"?",用啥函数能返回一个值呢(字符串或者数值都可以),这样如果是F2就可以执行一段代码.
import java.awt.event.KeyEvent;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class KeyBoardListener extends JFrame {public static void main(String[] args) throws FileNotFoundException {
new KeyBoardListener();
}
public KeyBoardListener() throws FileNotFoundException {
this.setTitle("监听键盘事件");
this.setSize(200, 50);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
this.addKeyListener(new KeyAdapter() { @Override
public void keyReleased(KeyEvent e) {
//键盘弹起后执行
char ch = e.getKeyChar();
try {
System.out.print(ch);
System.out.print(";");
}catch(Exception e1)
{
System.out.println(e1);
}
}
}
);
}
}
这句:char ch = e.getKeyChar(); 可以返回字符和数字,但按F2时返回"?",用啥函数能返回一个值呢(字符串或者数值都可以),这样如果是F2就可以执行一段代码.
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import javax.swing.JFrame;
import javax.swing.JOptionPane;public class KeyBoardListener extends JFrame
{ public static void main(String[] args) throws FileNotFoundException
{
new KeyBoardListener();
} public KeyBoardListener() throws FileNotFoundException
{ this.setTitle("监听键盘事件");
this.setSize(200, 50);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
this.addKeyListener(new KeyAdapter()
{ @Override
public void keyReleased(KeyEvent e)
{
// 键盘弹起后执行
//char ch = e.getKeyChar();
try
{
// System.out.print(ch);
// System.out.print(";");
System.out.print(KeyEvent.getKeyText(e.getKeyCode()));
System.out.print(";");
}
catch (Exception e1)
{
System.out.println(e1);
}
} });
}
}
比如我在玩星际2,希望按了F2,就调用我的java程序(作用是帮助微操作).
由于星际一转为后台就会暂停,所以希望java后台运行