- 技术
- java学生信息输入窗口
源代码
package Experiments
;
import javax
.swing
.*
;
import java
.awt
.*
;
import java
.awt
.event
.ActionEvent
;
import java
.awt
.event
.ActionListener
;
import java
.awt
.event
.ItemEvent
;
import java
.awt
.event
.ItemListener
;
public class Experiment71 {
public static void main(String
[] args
) {
new Student2().display();
}
}
class Student2 implements ActionListener, ItemListener
{
JFrame f
;
JTextField number
, name
;
JRadioButton sex1
, sex2
;
JComboBox dept
, major
;
List info
;
JButton addInfo
, deleteInfo
;
public void display(){
JPanel p1
, p2
, p3
;
ButtonGroup cg
;
f
= new JFrame("学生信息输入窗口");
f
.setBounds(200, 140, 480, 200);
f
.setBackground(Color
.lightGray
);
f
.setLayout(new GridLayout(1, 2));
info
= new List();
f
.add(info
);
p1
= new JPanel();
p1
.setLayout(new GridLayout(6, 1));
f
.add(p1
);
number
= new JTextField("学号");
name
= new JTextField("姓名");
cg
= new ButtonGroup();
sex1
= new JRadioButton("男", true);
sex2
= new JRadioButton("女", false);
cg
.add(sex1
);
cg
.add(sex2
);
dept
= new JComboBox();
dept
.addItem("计算机系");
dept
.addItem("金融系");
dept
.addItemListener(this);
major
= new JComboBox();
major
.addItem("软件工程");
major
.addItem("计算机科学与技术");
addInfo
= new JButton("增加");
deleteInfo
= new JButton("删除");
addInfo
.addActionListener(this);
deleteInfo
.addActionListener(this);
p1
.add(number
);
p1
.add(name
);
p2
= new JPanel();
p2
.setLayout(new GridLayout(1, 2));
p2
.add(sex1
);
p2
.add(sex2
);
p1
.add(p2
);
p1
.add(dept
);
p1
.add(major
);
p3
= new JPanel();
p3
.setLayout(new GridLayout(1, 2));
p3
.add(addInfo
);
p3
.add(deleteInfo
);
p1
.add(p3
);
f
.setDefaultCloseOperation(WindowConstants
.EXIT_ON_CLOSE
);
f
.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e
) {
if(e
.getSource() == addInfo
){
String str
;
str
= number
.getText() + " " + name
.getText();
if(sex1
.isSelected())
str
+= " " + sex1
.getText();
if(sex2
.isSelected())
str
+= " " + sex2
.getText();
str
+= " " + dept
.getSelectedItem();
str
+= " " + major
.getSelectedItem();
info
.add(str
);
}
if(e
.getSource() == deleteInfo
){
if(info
.getSelectedIndex() >= 0)
info
.remove(info
.getSelectedIndex());
}
}
@Override
public void itemStateChanged(ItemEvent e
) {
if(dept
.getSelectedIndex() == 0){
major
.removeAllItems();
major
.addItem("软件工程");
major
.addItem("计算机科学与技术");
}
if(dept
.getSelectedIndex() == 1){
major
.removeAllItems();
major
.addItem("国际金融");
major
.addItem("金融理财");
}
}
}
运行结果
Processed:
0.009, SQL:
9
