Question

java 怎么写键盘事件监听？

Answer 1

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

class ziti implements KeyListener
{JFrame jf;
JComboBox jc;
String[] kk={"隶书","楷体","黑体","宋体"};
String str="隶书"; int k1=Font.PLAIN; int k2=16;

ziti()
{jf=new JFrame("字体事件测试");
jc=new JComboBox(kk)
Container co=jf.getContentPane();
JPanel pp=new JPanel();
co.add(pp);
pp.setLayout(null);

pp.add(jc
jf.setSize(400,500);
jf.setLocation(50,50);
jf.setVisible (true);

jc.setBounds(10,100,100,30);

jc.addKeyListener(this);

}

public void keyTyped(KeyEvent e)
{ str=kk[jc.getSelectedIndex()];

}
public void keyPressed(KeyEvent e){}
public void keyReleased(KeyEvent e){}

}

public class cv1
{public static void main(String[] args)
{ new ziti();
}
}

基本上就是这么写的 里面加你要写的就好咯 有什么问题你可以追问

Answer 2

用KeyListener这个Interface来处理有关键盘的事件。这个Interface有三种方法 keyPressed()
keyTyped() keyReleased() 方法的含义跟鼠标事件的含义差不多