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Example of textarea in java



       find the length of the text in textarea


import java.awt.*;

import java.awt.event.*;

import java.applet.*;

/*
            <applet code="TextArea1" height=200 width=200>
            </applet>
*/
public class TextArea1 extends Applet implements ActionListener
{
            TextArea ta;
            TextField tsp,tep,tlen;
public void init()
            {
                        Label l1=new Label("Enter the text                             :");
                        add(l1);

                        ta=new TextArea(10,50);
                        add(ta);

                        Label l2=new Label("Starting Position :");
                        add(l2);
                       
                        tsp=new TextField(20);
                        tsp.setEditable(false);
                        add(tsp);
                       
                        Label l3=new Label("Ending Position :");
                        add(l3);

                        tep=new TextField(20);
                        tep.setEditable(false);
                        add(tep);

                        Label l4=new Label("Selection Length:");
                        add(l4);

                        tlen=new TextField(20);
                        tlen.setEditable(false);
                        add(tlen);

                        Button b=new Button("Show");
                        add(b);
                        b.addActionListener(this);
            }
            public void actionPerformed(ActionEvent ae)
            {
                        /*get and set the starting position of the selection */

                        int sposition=ta.getSelectionStart();
                       
                        tsp.setText(sposition+"");

                        /*get and set the ending position of the selection */

                        int eposition=ta.getSelectionEnd();
                       
                        tep.setText(eposition+"");

                        /*get and set the length of  selection */

                        String s=ta.getSelectedText();

                        int slength=s.length();
                       
                        tsp.setText(slength+"");

            }
}

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