为什么我加的最后一个组件的大小和窗口相同

Question

默认是BorderLayout
你改一下Layout的方法就好了
可以用
FlowLayout 或者GridLayout

Answer 1

在super("a example");后面加上
setLayout(new FlowLayout());

Answer 2

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;public class Frame1 extends Frame
{
        public static void main(String args[])
        {
                Frame f=new Frame1();
                f.setSize(500,400);
                f.setVisible(true);
                f.addWindowListener(new WindowAdapter()
                {
                   public void windowClosing(WindowEvent e){
                       System.exit(0);
                   }
            });
    }        public  Frame1(){
                super("a example");
                Label one=new Label("please choose method");
                Choice eny=new Choice();
                eny.add("des");
                eny.add("rsa");
                Button desEncry=new Button("desEncry");
                Button rsaEncry=new Button("rsaEncry");
                TextField tencry=new TextField(50);
                TextField tdencry=new TextField(50);
                setLayout(null);
                one.setBounds(20,40,150,30);
                eny.setBounds(200,40,200,30);
                tencry.setBounds(20,90,400,30);
                tdencry.setBounds(20,150,400,30);
                desEncry.setBounds(50,200,80,30);
                rsaEncry.setBounds(150,250,80,30);
                add(one);
                add(eny);
                add(tencry);
                add(tdencry);
                add(desEncry);
                add(rsaEncry);
                   show();
        }
}

Answer 3

在encry构造函数中增加getContendPane().setLayout(null);

Answer 4

你用的是awt,那要在构造函数里增加:setLayout(null);