Java如何获取或设置JCheckBox的状态？
这个简单的示例向您展示了如何获取或设置状态JCheckBox。设置状态JCheckBox.setSelected(boolean)的方法为和获取状态的方法为JCheckBox.isSelected()返回布尔值。
package org.nhooo.example.swing;
import javax.swing.*;
import java.awt.*;
public class CheckBoxState extends JFrame {
public CheckBoxState() throws HeadlessException {
initialize();
}
private void initialize() {
setSize(300, 300);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setLayout(new FlowLayout(FlowLayout.LEFT));
//创建带有文本标签的复选框
JCheckBox checkBox = new JCheckBox("Check me!");
checkBox.setSelected(true);
//获取复选框选择状态
boolean selected = checkBox.isSelected();
if (selected) {
System.out.println("Check box state is selected.");
} else {
System.out.println("Check box state is not selected.");
}
getContentPane().add(checkBox);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new CheckBoxState().setVisible(true);
}
});
}
}