JTextArea class

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. }