2016.9.19小程序

制作一个界面完成员工信息的添加、显示和查找

实现步骤：

1、制作界面

2、建立员工类，包含姓名、年龄、性别、电话4个私有属性，加上get和set方法作为访问器和修改器

3、在事件类中加入一个员工数组的属性，用于保存员工信息，加入一个number的属性，用于记录员工的人数。

4、当单击添加时，从四个文本框中得到信息，并封装成员工对象，然后将员工对象加入员工数组，人数加1。如果超出数组的长度，添加按钮变灰，阻止用户继续添加。

5、当单击显示时，弹出对话框，显示现有员工的信息。

6、在姓名文本框中输入用户姓名，单击查找按钮，将该用户的姓名、年龄、性别、电话，显示在文本框中。

1、员工类

public class Staff {
    private String name ;
    private String age ;
    private String sex ;
    private String tel ;
    
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public String getTel() {
        return tel;
    }
    public void setTel(String tel) {
        this.tel = tel;
    }
    
}

2、主界面

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;
import javax.swing.JOptionPane;

import JLabelAndJButton.MyButton;
import JLabelAndJButton.MyTxt;

public class MainJFrame extends JFrame{
    private  MyTxt workName = new MyTxt("姓名", 60, 40, this);
    private MyTxt workAge = new MyTxt("年龄", 60, 100, this);
    private MyTxt workSex = new MyTxt("性别", 60, 160, this);
    private MyTxt workTel = new MyTxt("电话", 60, 220, this);
    
    private MyButton addButton = new MyButton("添加", 40, 280, this);
    
    static int num = 0;
    public static Staff [] workers = new Staff[2];
    
    public MainJFrame(){
        this.setTitle("我的窗体");
        this.setLayout(null);
         MyButton showButton = new MyButton("显示", 140, 280, this);
         MyButton findButton = new MyButton("查找", 240, 280, this);
         
        /**添加*/
        addButton.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent arg0) {
                addnum ();
            }
        });
        /**显示*/
        showButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                shownum();
            }
        });
        /**查找*/
        findButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                findnum();
            }
        });
        
        this.setSize(400, 400);
        this.setVisible(true);
        this.setDefaultCloseOperation(3);
        this.setLocationRelativeTo(null);
    
    }
    /**添加方法*/
    public void addnum (){
        Staff worker = new Staff();
        
        worker.setName(workName.getText());
        worker.setAge(workAge.getText());
        worker.setSex(workSex.getText());
        worker.setTel(workTel.getText());
        workers[num] = worker;
        num++;
        if (num == workers.length){
            JOptionPane.showMessageDialog(null, "添加成功");
            addButton.setEnabled(false);
        }else {
            JOptionPane.showMessageDialog(null, "添加成功");
        }
        workName.setText("");
        workAge.setText("");
        workSex.setText("");
        workTel.setText("");
    }
    /**显示方法*/
    public void shownum (){
        String s = "姓名     "+"年龄     "+"性别     "+"电话
";
        for(int i = 0 ;i <num ;i++){
            s+= workers[i].getName()+ "         " + workers[i].getAge()+ "         " + 
                    workers[i].getSex()+ "      " + workers[i].getTel()+"
";
        }
        JOptionPane.showMessageDialog(null, s);
    }
    /**查找方法*/
    public void findnum(){
        int m = -1;
        
        for(int i = 0;i< num;i++){
            if((workName.getText()).equals(workers[i].getName())){
                    m=i;
            }
        }
        
        if( m ==-1){
            JOptionPane.showMessageDialog(null, "找不到此人");
        }else {
            workAge.setText(workers[m].getAge());
            workSex.setText(workers[m].getSex());
            workTel.setText(workers[m].getTel());
        }

    }
    
    public static void main(String[] args) {
        MainJFrame meun = new MainJFrame();

    }

}