Question

Java中复选框CheckBox的使用

Answer 1

import java.awt. *; import java.awt.event. *;import java.applet. *;public class CheckBoxDemo extends Applet implements ItenListener {String msg=" ";CheckBox WinXP,winNT,solaris,mac;public void init(){WinXP=new CheckBox("WindowsXP",null,true);winNT=new Checkbox("Window NT/2000");solaris=new Checkbox("Solaris");mac=new CheckBox("MacOS");add(WinXP);add(WinNT);add(solaris);add(mac);WinXP.addItemListener(this);winNT.addItenListener(this);solaris.addItenListener(this);mac.addItenListener(this);}public v oid itemStateChanged(ItemEvent ie){repaint();}public void paint(Graphics g)msg="当前系统是:";g.drawString(msg,6,80);msg="Windows XP:"+WinXP.getState();g.drawString(msg,6,100);msg="Windows NT/2000:"+WinNT.getState();
g.drawString(msg,6,120);msg="Solaris :"+WinXP.getState();g.drawString(msg,6,140);msg="MacOS :"+mac.getState();g.drawString(msg,6,160); }}

Answer 2

<input type="checkbox" name="cbx" value="v1"><input type="checkbox" name="cbx" value="v2">当提交后用request。getParaments（“cbx”）；就能取到数组。

Answer 3

详细一点

Answer 4

import java.awt.*;
import java.awt.Color;
import java.awt.*;

public class Qualification extends Frame {
Label lb1 = new Label("您的学历为：");
CheckboxGroup cg = new CheckboxGroup();
Checkbox r1 = new Checkbox("专科", cg, false);
Checkbox r2 = new Checkbox("本科", cg, false);
Checkbox r3 = new Checkbox("硕士", cg, false);
Checkbox r4 = new Checkbox("博士", cg, true);

Label lb2 = new Label("您精通的语言为：");
Checkbox t1 = new Checkbox("Visual Basic");
Checkbox t2 = new Checkbox("Visual C++");
Checkbox t3 = new Checkbox("Java");

public Qualification(String s) {
super(s);
setLayout(new GridLayout(10, 1));
add(lb1);
add(r1);

add(r2);
add(r3);
add(r4);
add(lb2);

add(t1);
add(t2);
add(t3);
}

public static void main(String args[]) {
Qualification q = new Qualification("学识！");
q.setSize(400, 250);
q.setLocation(200, 300);
q.setVisible(true);
}
}