java第八次上机

1.求和并清除

package smy.window;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class plus implements ActionListener{
    JFrame f;
    JPanel p;
    JLabel l1,l2,l3,l4;
    JButton b1,b2;
    JTextField[] t;
    public plus(){
        f = new JFrame("求和");
        p = new JPanel();
        b1 = new JButton("求和"); 
        b2 = new JButton("清除"); 
        l1 = new JLabel("加数1"); 
        l2 = new JLabel("加数2"); 
        l3 = new JLabel(" "); 
        l4 = new JLabel(" "); 
        t = new JTextField[3];
        for(int i=0;i<t.length;i++){
            t[i] = new JTextField(5);
        }
        
        f.setVisible(true); 
        f.setLocationRelativeTo(null);  
        f.setSize(400,220);
        f.add(p);
        p.setLayout(new GridLayout(3,3));
        p.add(l1);
        p.add(t[0]);
        p.add(l3);
        p.add(l2);
        p.add(t[1]);
        p.add(l4);
        p.add(b1);
        p.add(t[2]);
        p.add(b2);
        
        b1.addActionListener(this);
        b2.addActionListener(this);
}
    public static void main(String[] args) {
        new plus();
    }

    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==b1){
            int m,n;
            m=Integer.parseInt(t[0].getText());
            n=Integer.parseInt(t[1].getText());
            t[2].setText(m+n+"");}
        else if(e.getSource()==b2){
            for(int i=0;i<t.length;i++){
            t[i].setText(null);}
            }
    }

}

运行界面

 

2.信息录入

package bbb;
import javax.swing.*;
import java.awt.*;

public class imformation {
    JFrame f;
    JPanel p;
    JLabel [] l;
    String[] title = {"姓名：  ",
                    "性别：  ",
                    "爱好：  ",
                    "籍贯：  ",
                    "  ",
                    "  ",
                    "  ",
                    "  ",
                    "  ",
                    "  "};
    JButton b;
    JTextField t;
    JRadioButton [] r;            //单选按钮
    String[] title1 = {"男",
                        "女"};
    JCheckBox [] c;             //复选框 3个
    String[] title2 = {"体育",
                        "音乐",
                        "美术"};
    JComboBox cb;
    JTextArea a;        
    
    public imformation(){
        f = new JFrame("信息录入");
        p = new JPanel();
        t = new JTextField(9);
        b = new JButton("确定");
        a = new JTextArea();    
        l = new JLabel[10];
        cb = new JComboBox();
        for(int i=0;i<l.length;i++){
            l[i] = new JLabel(title[i]);
        }
        r = new JRadioButton[2];
        for(int j=0;j<r.length;j++){
            r[j] = new JRadioButton(title1[j]);
        }
        c = new JCheckBox[3];
        for(int k=0;k<c.length;k++){
            c[k] = new JCheckBox(title2[k]);
        }
        
        f.setVisible(true);
        f.setLocationRelativeTo(null); 
        f.setSize(450,450);
        f.add(p,BorderLayout.NORTH);
        p.setLayout(new GridLayout(5,3));
        
        p.add(l[0]);
        p.add(t);
        p.add(l[4]);
        p.add(l[5]);

        
        p.add(l[1]);
        p.add(r[0]);
        p.add(r[1]);
        p.add(l[6]);

        p.add(l[2]);
        p.add(c[0]);
        p.add(c[1]);
        p.add(c[2]);

        p.add(l[3]);
        p.add(cb);
        
        p.add(l[7]);
        p.add(l[8]);
        //p.add(l[9]);
        p.add(b);
      

        f.add(a,BorderLayout.CENTER);
    }
    
    public static void main(String[] args) {
        new imformation();
    }

}