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49 lines (45 loc) · 1.02 KB
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Copy pathUseChoice.java
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49 lines (45 loc) · 1.02 KB
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import java.awt.*;
import java.applet.*;
import java.applet.Applet;
public class UseChoice extends Applet
{
String str1 = new String();
String str2 = new String();
int count = 0;
int i1 = 0;
boolean b1 = false;
Choice c1; // 声明组合框对象
public void init()
{
// 初始化组合框对象
c1 = new Choice();
c1.add("语文");
c1.add("数学");
c1.add("物理");
c1.add("化学");
c1.add("生物");
c1.select(4);
this.add(c1);
}
public void start()
{
count = c1.getItemCount();
str1 = c1.getItem(2);
str2 = c1.getSelectedItem();
i1 = c1.getSelectedIndex();
operate();
repaint();
}
public void paint(Graphics g)
{
g.drawString("元素总个数为: " + count, 10,80);
g.drawString("第２项元素为: " + str1, 10, 100);
g.drawString("选中项的元素为: " + str2, 10, 120);
g.drawString("选中项的位置为: " + i1, 10, 140);
}
public void operate()
{
c1.insert("英语", 3);
c1.remove("生物");
}
}