Java Text Area (JTextArea) - Swing Example

JTextArea textArea = new JTextArea();
textArea.getText(); // get ค่า
textArea.setText(); // set ค่า

for (String line : textArea.getText().split("\\n")) 
{
	System.out.println(line);
}

package com.java.myapp;

import java.awt.EventQueue;

import javax.swing.JButton;
import javax.swing.JFrame;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JTextArea;


public class MyForm extends JFrame {
	
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				MyForm frame = new MyForm();
				frame.setVisible(true);
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public MyForm() {
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 362, 249);
		setTitle("ThaiCreate.Com Java GUI Tutorial");
		getContentPane().setLayout(null);
		
		// TextArea
		final JTextArea textArea = new JTextArea();
		textArea.setBounds(76, 11, 191, 50);
		getContentPane().add(textArea);
		
		// Label
		final JLabel lbl = new JLabel("Result");
		lbl.setBounds(103, 120, 144, 14);
		getContentPane().add(lbl);
		
		// Button
		JButton btn1 = new JButton("Button 1");
		btn1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				lbl.setText("Hello : "+ textArea.getText());
				
				// Read ln
				for (String line : textArea.getText().split("\\n")) 
				{
					System.out.println(line);
				}
				
			}
		});
		btn1.setBounds(128, 72, 99, 23);
		getContentPane().add(btn1);		

	}
}

		// TextArea
		final JTextArea textArea = new JTextArea();

		// ScrollPane
		JScrollPane scroll = new JScrollPane(textArea);
		scroll.setBounds(100, 52, 130, 50);
		getContentPane().add(scroll);

package com.java.myapp;

import java.awt.EventQueue;

import javax.swing.JButton;
import javax.swing.JFrame;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import javax.swing.JScrollPane;
import javax.swing.JLabel;
import javax.swing.JTextArea;


public class MyForm extends JFrame {
	
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				MyForm frame = new MyForm();
				frame.setVisible(true);
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public MyForm() {
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 362, 249);
		setTitle("ThaiCreate.Com Java GUI Tutorial");
		getContentPane().setLayout(null);
		
		// TextArea
		final JTextArea textArea = new JTextArea();

		// ScrollPane
		JScrollPane scroll = new JScrollPane(textArea);
		scroll.setBounds(100, 52, 130, 50);
		getContentPane().add(scroll);
		
		// Label
		final JLabel lbl = new JLabel("Result");
		lbl.setBounds(107, 170, 144, 14);
		getContentPane().add(lbl);
		
		// Button
		JButton btn1 = new JButton("Button 1");
		btn1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				lbl.setText("Hello : "+ textArea.getText());
				
				// Read line
				for (String line : textArea.getText().split("\\n")) 
				{
					System.out.println(line);
				}
				
			}
		});
		btn1.setBounds(119, 129, 99, 23);
		getContentPane().add(btn1);


	}
}