Question

怎么把checkbox和combobox结合

Answer 1

package ww;

import java.awt.Checkbox;

import java.awt.Choice;

import java.awt.FlowLayout;

import java.awt.Frame;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

public class Sx extends Frame implements ItemListener{

/**

* @param args

*/

Checkbox checkbox;

Choice choice;

public Sx() {

this.setBounds(100, 100, 400, 300);

this.setLayout(new FlowLayout());

checkbox = new Checkbox("勾选");

choice = new Choice();

for (int i = 0; i < 6; i++) {

choice.add(i + "");

}

// choice.setVisible(false);

this.add(checkbox);

this.add(choice);

choice.setEnabled(false);

checkbox.addItemListener(this);

this.setVisible(true);

this.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

}

public static void main(String[] args) {

// TODO Auto-generated method stub

new Sx();

}

@Override

public void itemStateChanged(ItemEvent e) {

// TODO Auto-generated method stub

if(checkbox.getState())

{

choice.setEnabled(true);

}

else if(!checkbox.getState())

{

choice.setEnabled(false);

}

}

}