JRadioButton单选按钮代码1

来源：互联网发布：孟加拉各月进出口数据编辑：程序博客网时间：2024/05/16 18:51

直接上代码吧。

public class JRadioButtonTest extends JApplet{public void init() {Container contentPane = getContentPane();contentPane.add(new PrintRangePanel(100, 101));}}class PrintRangePanel extends JPanel {JRadioButton printAll, printRange;JLabel startPage, endPage;JTextField startField, endField;public PrintRangePanel(int start, int end) {ButtonGroup group= new ButtonGroup();printAll = new JRadioButton("Print All");printRange = new JRadioButton("Print Range");startPage = new JLabel("Start Page:");endPage = new JLabel("End Page:");startField = new JTextField(Integer.toString(start));endField = new JTextField(Integer.toString(end));add(printAll); add(printRange);add(startPage);add(startField);add(endPage); add(endField);printRange.setSelected(true);group.add(printAll);group.add(printRange);printRange.addItemListener(new ItemListener() {public void itemStateChanged(ItemEvent event) {if(printRange.isSelected()) {startField.setEnabled(true);endField.setEnabled (true); startPage.setEnabled (true); endPage.setEnabled (true); startField.requestFocus();}}});printAll.addItemListener(new ItemListener() {public void itemStateChanged(ItemEvent event) {if(printAll.isSelected()) {startField.setEnabled(false);endField.setEnabled (false);startPage.setEnabled (false);endPage.setEnabled (false);startPage.repaint();endPage.repaint();}}});}}