java窗口

柔情只为你懂 2021-11-23 02:30 291阅读 0赞

1，制作一个如图所示的界面（使用FlowLayout布局），不要求实现功能。  
![1632097-20190515112544923-457518247.png][]

import java.awt.*;
    import javax.swing.*;
    public class shizhong extends JFrame  {
        JFrame jf;//窗口
        JPanel jp;//面板
        JButton jb1;//按钮
        JButton jb2;//按钮
        JTextField jt1;//文本框
        JTextField jt2;//文本框
        JTextField jt3;//文本框
        JTextField jt4;//文本框
        JTextField jt5;//文本框
        JTextField jt6;//文本框
        JLabel jl1;//标签
        JLabel jl2;//标签
        JLabel jl3;//标签
        JLabel jl4;//标签
        JLabel jl5;//标签
        JLabel jl6;//标签
        JLabel jl7;//标签
        JLabel jl8;//标签
        JLabel jl9;//标签
        public shizhong(){
            jf = new JFrame();//窗口
            jp = new JPanel();//面板
            jb1 = new JButton("开");//按钮
            jb2= new JButton("关");//按钮
            jl1 = new JLabel("当前时间：");
            jl2 = new JLabel("时");
            jl3 = new JLabel("分");
            jl4 = new JLabel("秒");
            jl5 = new JLabel("闹钟时间：");
            jl6 = new JLabel("时");
            jl7 = new JLabel("分");
            jl8 = new JLabel("秒");
            jl9 = new JLabel("闹钟设置");
            jt1 = new JTextField(3);
            jt2 = new JTextField(3);
            jt3 = new JTextField(3);
            jt4 = new JTextField(3);
            jt5 = new JTextField(3);
            jt6 = new JTextField(3);
            jf.add(jp);
            jp.add(jl1);
            jp.add(jt1);
            jp.add(jl2);
            jp.add(jt2);
            jp.add(jl3);
            jp.add(jt3);
            jp.add(jl4);
            jp.add(jl5);
            jp.add(jt4);
            jp.add(jl6);
            jp.add(jt5);
            jp.add(jl7);
            jp.add(jt6);
            jp.add(jl8);
            jp.add(jl9);
            jp.add(jb1);
            jp.add(jb2);
            jf.setVisible(true);
            jf.setSize(400,300);
        }
        public static void main(String[]args){
            new shizhong();
        }
    }

![1632097-20190515112658347-1904019270.png][]

2 , 设计一个用标签、文本行与按钮来登录的界面（用GridLayout布局方式）。如图所示  
![1632097-20190515112724038-1729294143.png][]

import java.awt.*;
    import javax.swing.*;
    public class GridLayoutPosition extends JFrame  {
        public GridLayoutPosition(){
            Container c = getContentPane();
            //三行两列
            setLayout(new GridLayout(3,2,10,10));
            c.add(new JLabel("用户名："));
            c.add(new JTextField(4));
            c.add(new JLabel("口令："));
            c.add(new JTextField(4));
            c.add(new JButton("确定"));
            c.add(new JButton("取消"));
            setSize(300,200);
            setTitle("网格布局");
            setVisible(true);
            setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        }
        public static void main(String[]args){
            new GridLayoutPosition();
        }
    }

![1632097-20190515120139055-1558850128.png][]

3、

import java.awt.*;
    
    import javax.swing.*;
    public class jsq{
        JFrame jf;//窗口
        JPanel jp;//面板
        JButton jb1;//按钮
        JButton jb2;//按钮
        JButton jb3;//按钮
        JButton jb4;//按钮
        JButton jb5;//按钮
        JButton jb6;//按钮
        JButton jb7;//按钮
        JButton jb8;//按钮
        JButton jb9;//按钮
        JButton jb10;//按钮
        JButton jb11;//按钮
        JButton jb12;//按钮
        JButton jb13;//按钮
        JButton jb14;//按钮
        JButton jb15;//按钮
        JButton jb16;//按钮
        JTextField jt1;//文本框
        GridLayout w;
        public jsq(){
            jf = new JFrame("计算器");//窗口 
            jt1 = new JTextField();
            jf.add(jt1,BorderLayout.NORTH);
            w = new GridLayout(4,4);
            jp = new JPanel();//面板
            jp.setLayout(w);
            jb1 = new JButton("7");//按钮
            jb2 = new JButton("8");//按钮
            jb3 = new JButton("9");//按钮
            jb4 = new JButton("/");//按钮
            jb5 = new JButton("4");//按钮
            jb6 = new JButton("5");//按钮
            jb7 = new JButton("6");//按钮
            jb8 = new JButton("*");//按钮
            jb9 = new JButton("1");//按钮
            jb10 = new JButton("2");//按钮
            jb11 = new JButton("3");//按钮
            jb12 = new JButton("-");//按钮
            jb13 = new JButton("0");//按钮
            jb14 = new JButton(".");//按钮
            jb15 = new JButton("=");//按钮
            jb16 = new JButton("+");//按钮        
            jf.add(jp);
            jp.add(jb1);
            jp.add(jb2);
            jp.add(jb3);
            jp.add(jb4);
            jp.add(jb5);
            jp.add(jb6);
            jp.add(jb7);
            jp.add(jb8);
            jp.add(jb9);
            jp.add(jb10);
            jp.add(jb11);
            jp.add(jb12);
            jp.add(jb13);
            jp.add(jb14);
            jp.add(jb15);
            jp.add(jb16);
            jf.setVisible(true);
            jf.setSize(400,300);
        }
        public static void main(String[]args){
            new jsq();
        }
    }

![1632097-20190522114010785-275848794.png][]

4、编写可改变背景颜色的窗口。

import java.awt.*;
    import javax.swing.*;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    public class cc{
        JFrame jf;//窗口
        JPanel jp;//面板
        JButton jb1;//按钮
        JButton jb2;//按钮
        JButton jb3;//按钮
        public cc(){
            jf = new JFrame("变色");//窗口  
            jp = new JPanel();//面板
            jf.add(jp);
            jb1 = new JButton("天依蓝");//按钮
            jb1.addActionListener(new jbListener());
            jb2 = new JButton("蕾姆蓝");//按钮
            jb2.addActionListener(new jbListener());
            jb3 = new JButton("初音绿");//按钮   
            jb3.addActionListener(new jbListener());
            jp.setBackground(Color.black);
            jp.add(jb1);
            jp.add(jb2);
            jp.add(jb3);
            
            jf.setVisible(true);
            jf.setSize(400,300);
        }
        class jbListener implements ActionListener{
            public void actionPerformed(ActionEvent e) {
                JButton jbInput= (JButton)e.getSource();
                if(jbInput.equals(jb1)) {
                    jp.setBackground(new Color(130,200,250));
                }else if(jbInput.equals(jb2)){
                    jp.setBackground(new Color(51, 153, 255 ));
                }
                else if(jbInput.equals(jb3)){
                    jp.setBackground(new Color(57, 197, 187));
                }
            }
        }
    
        public static void main(String[]args){
            new cc();
        }
    }

![1632097-20190527143556503-652514311.gif][]

![1632097-20190527143714019-1294925891.png][]

转载于:https://www.cnblogs.com/BKKITO/p/10868596.html

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[1632097-20190515112724038-1729294143.png]: /images/20211122/a4d485d7c5e84940ad11f95d58c6fef4.png
[1632097-20190515120139055-1558850128.png]: /images/20211122/5ac51906c5784b558878834b56c0c876.png
[1632097-20190522114010785-275848794.png]: /images/20211122/6123de0ec2e14e2d87fe99e4c3701995.png
[1632097-20190527143556503-652514311.gif]: /images/20211122/6ff90d85272c413d9f3047adaa9bdf04.png
[1632097-20190527143714019-1294925891.png]: /images/20211122/5163e2d4584547f0befd61c5abeb87a8.png