Java 将选定的单选按钮显示在文本区域中
我正在用netbeans制作一个程序,允许用户导入他们的电脑规格,我有两个单选按钮,当你选择选项时,我想要它,当按下display时,它会在文本区域显示你的选择。我已经有了其他文本字段,用户可以在这些字段中输入信息,然后显示到文本区域中,但是对于单选按钮,我该怎么做呢Java 将选定的单选按钮显示在文本区域中,java,swing,actionlistener,jradiobutton,Java,Swing,Actionlistener,Jradiobutton,我正在用netbeans制作一个程序,允许用户导入他们的电脑规格,我有两个单选按钮,当你选择选项时,我想要它,当按下display时,它会在文本区域显示你的选择。我已经有了其他文本字段,用户可以在这些字段中输入信息,然后显示到文本区域中,但是对于单选按钮,我该怎么做呢 private void displayActionPerformed(java.awt.event.ActionEvent evt) {
private void displayActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
textarea.append("Processor: " + processorTextField.getText() + "\nGraphics Card: "
+ graphicsCardTextField.getText() + "\nRam: " + ramTextField.getText() + "\nHard Drive: " +
hardDriveTextField.getText() + "\nOperating System: " + operatingSystemTextField.getText()
+ "\nMonitor Size: " + monitorTextField.getText());
}
这是当按下显示按钮时,其他文本字段进入文本区域的代码如果您已将JRadioButtons添加到ButtonGroup,则ButtonGroup可以通过调用
getSelection()
从所选JRadioButton向您提供ButtonModel。然后可以获取模型的actionCommand字符串(必须为JRadioButtons显式设置)。例如,假设一个名为ButtonGroup的ButtonGroup:
private void displayActionPerformed(java.awt.event.ActionEvent evt) {
// 1st get the ButtonModel for the selected radio button
ButtonModel buttonModel = buttonGroup.getSelection();
// if a selection has been made, then model isn't null
if (buttonModel != null) {
// again actionCommand needs to be set for each JRadioButton
String actionCommand = buttonModel.getActionCommand();
// TODO: use actionCommand String as needed
}
}
例如:
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import javax.swing.*;
@SuppressWarnings("serial")
public class RadioEg extends JPanel {
private static final String[] RADIO_TEXTS = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday"};
private ButtonGroup buttonGroup = new ButtonGroup();
public RadioEg() {
JPanel radioPanel = new JPanel(new GridLayout(0, 1));
for (String radioText : RADIO_TEXTS) {
JRadioButton radioButton = new JRadioButton(radioText);
radioButton.setActionCommand(radioText); // set this!
radioPanel.add(radioButton); // add to JPanel
buttonGroup.add(radioButton); // add to button group
}
JPanel southPanel = new JPanel();
southPanel.add(new JButton(new AbstractAction("GetSelection") {
@Override
public void actionPerformed(ActionEvent e) {
ButtonModel buttonModel = buttonGroup.getSelection();
if (buttonModel != null) {
String actionCommand = buttonModel.getActionCommand();
System.out.println("Selected Button: " + actionCommand);
}
}
}));
setLayout(new BorderLayout());
add(radioPanel, BorderLayout.CENTER);
add(southPanel, BorderLayout.PAGE_END);
}
private static void createAndShowGui() {
JFrame frame = new JFrame("RadioEg");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new RadioEg());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
如何将两个jradioButton放入一个按钮组?@HarpreetSunner:通过调用
add(…)
方法。例如:buttonGroup.add(myRadioButton)
。请看上面的代码示例。很抱歉这么麻烦,但我已经将它们添加到了一个组中,但是我如何将您提供给我的代码添加到我已经获得的代码中?@HarpreetSunner:这由您来解决。:)我完全相信您可以做到这一点,但首先不要使用我的代码——您永远不应该以这种方式借用代码——而是通过研究它,并使用它的思想。