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Java Program to display the contents in JTextArea
The following is an example to display the contents of a text file in JTextArea −
Example
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class SwingDemo {
private JFrame mainFrame;
private JLabel statusLabel;
private JPanel controlPanel;
public SwingDemo() {
prepareGUI();
}
public static void main(String[] args) {
SwingDemo demo = new SwingDemo();
demo.showTextAreaDemo();
}
private void prepareGUI() {
mainFrame = new JFrame("Java Swing");
mainFrame.setSize(400,400);
mainFrame.setLayout(new GridLayout(3, 1));
mainFrame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent windowEvent) {
System.exit(0);
}
});
statusLabel = new JLabel("",JLabel.CENTER);
statusLabel.setSize(350,100);
controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
mainFrame.add(controlPanel);
mainFrame.add(statusLabel);
mainFrame.setVisible(true);
}
private void showTextAreaDemo() {
JLabel commentlabel= new JLabel("Text = ", JLabel.RIGHT);
final JTextArea commentTextArea =
new JTextArea("This is demo text!",5,20);
JScrollPane scrollPane = new JScrollPane(commentTextArea);
JButton showButton = new JButton("Show");
showButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
statusLabel.setText( commentTextArea.getText());
}
});
controlPanel.add(commentlabel);
controlPanel.add(scrollPane);
controlPanel.add(showButton);
mainFrame.setVisible(true);
}
}Output
Click on the “Show” button above to display the text −
Updated on: 30-Jul-2019
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