JTextArea class (Swing Tutorial)

The JTextArea class is used to create a text area. It is a multiline area that displays the plain text only.

Commonly used Constructors

• JTextArea(): creates a text area that displays no text initially.
• JTextArea(String s): creates a text area that displays specified text initially.
• JTextArea(int row, int column): creates a text area with the specified number of rows and columns that displays no text initially..
• JTextArea(String s, int row, int column): creates a text area with the specified number of rows and columns that displays specified text.

Commonly used methods of JTextArea class

1) public void setRows(int rows): is used to set specified number of rows.

2) public void setColumns(int cols):: is used to set specified number of columns.

3) public void setFont(Font f): is used to set the specified font.

4) public void insert(String s, int position): is used to insert the specified text on the specified position.

5) public void append(String s): is used to append the given text to the end of the document.

Example of JTextField class:

1. import java.awt.Color;  
2. import javax.swing.*;  
3.   
4. public class TArea {  
5.     JTextArea area;  
6.     JFrame f;  
7.     TArea(){  
8.     f=new JFrame();  
9.           
10.     area=new JTextArea(300,300);  
11.     area.setBounds(10,30,300,300);  
12.       
13.     area.setBackground(Color.black);  
14.     area.setForeground(Color.white);  
15.           
16.     f.add(area);  
17.       
18.     f.setSize(400,400);  
19.     f.setLayout(null);  
20.     f.setVisible(true);  
21. }  
22.     public static void main(String[] args) {  
23.         new TArea();  
24.     }  
25. }