test est= new test();
est.setSize(200,300);
est.setVisible(true);
改为
test est= new test();
est.yaction();
est.setSize(200,300);
est.setVisible(true);
new my()就是生成一个新对象
est.setSize(200,300);
est.setVisible(true);
改为
test est= new test();
est.yaction();
est.setSize(200,300);
est.setVisible(true);
new my()就是生成一个新对象
多看看继承,接口
import java.awt.*;
import java.awt.event.*;
public class test extends Frame{
Button utton =new Button("ok");public static void main(String [] args){
test est= new test();
est.setSize(200,300);
est.setVisible(true);
est.myaction();
}public void myaction(){
this.add(utton);
utton.addActionListener(new my());
}class my implements ActionListener{
public void actionPerformed (ActionEvent e){
System.out.print("干嘛按我");
}
}
}