谁帮我改下这个java程序？急！！！！！

来源：百度知道 编辑：UC知道 时间：2024/06/25 05:50:29
public class CheckBoxExample extends Frame {

public CheckBoxExample(String ss){
super(ss);
Label l1=new Label("单项选择题一:");
CheckboxGroup group1= new CheckboxGroup();
Checkbox c1=new Checkbox("A",group1, true);
Checkbox c2=new Checkbox("B",group1, false);
Checkbox c3=new Checkbox("C",group1, false);
Checkbox c4=new Checkbox("D",group1, false);
Label l2=new Label("多项选择题一:");
Checkbox c5=new Checkbox("A");
Checkbox c6=new Checkbox("B");
Checkbox c7=new Checkbox("C");
Checkbox c8=new Checkbox("D");
Label l3=new Label("单项选择题二:");
CheckboxGroup group2= new CheckboxGroup();
Checkbox c9=new Checkbox("A",group2, true);
Checkbox c10=new Checkbox("B",group2, false);
Checkbox c11=new Checkbox("C",group2, false);
Checkbox c12=new Checkbox("D&

加上这几个就可以了
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

程序本身没什么错误，你把包导入试试看

这是我gaining改过的程序：
import java.awt.Checkbox;
import java.awt.CheckboxGroup;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class CheckBoxExample extends Frame {

public CheckBoxExample(String ss) {
super(ss);
Label l1 = new Label("单项选择题一:");
CheckboxGroup group1 = new CheckboxGroup();
Checkbox c1 = new Checkbox("A", group1, true);
Checkbox c2 = new Checkbox("B", group1, false);
Checkbox c3 = new Checkbox("C", group1, false);
Checkbox c4 = new Checkbox("D", group1, false);
Label l2 = new Label("多项选择题一:");
Checkbox c5 = new Checkbox("A");
Checkb