Working with JScrollPane

Question

I'm facing a serious issue , i want to use a scroll bars(vertical and horozontal ) but i'm not able to do ,
The peice of code that i'm having is
import java.awt.Adjustable;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class XmlComparision {
     * @param args
     public static void main(String[] args) {
          // TODO Auto-generated method stub
          JButton b1 = new JButton("XML 1");
          JButton b2 = new JButton("XML 2");
          JButton b3 = new JButton(" Compare ");
          JTextArea t1 = new JTextArea(10,10);
          JTextArea t2 = new JTextArea(10,10);
          JFrame myFrame = new JFrame("XML diff");
          JScrollPane scrollingArea = new JScrollPane(t1);
scrollingArea.setBorder(BorderFactory.createEmptyBorder(10,5,10,5));
          myFrame.setSize(1200, 900);
myFrame.setLocation (50,50);
Container content = myFrame.getContentPane();
content.setBackground(Color.GRAY);
//content.setLayout(new FlowLayout());
content.setLayout(null);
t1.setBounds(10,10,430,850);
t2.setBounds(620,10,470,850);
b1.setBounds(450,10,90,30);
b2.setBounds(1100,10,90,30);
b3.setBounds(400,1100,30,30);
content.add(t1);
content.add(b1);
content.add(t2);
content.add(b2);
content.add(b3);
content.add(scrollingArea, BorderLayout.CENTER);
          myFrame.setVisible(true);
     class MyAdjustmentListener implements AdjustmentListener {
// This method is called whenever the value of a scrollbar is changed,
// either by the user or programmatically.
public void adjustmentValueChanged(AdjustmentEvent evt) {
Adjustable source = evt.getAdjustable();
// getValueIsAdjusting() returns true if the user is currently
// dragging the scrollbar's knob and has not picked a final value
if (evt.getValueIsAdjusting()) {
// The user is dragging the knob
return;
// Determine which scrollbar fired the event
int orient = source.getOrientation();
if (orient == Adjustable.HORIZONTAL) {
// Event from horizontal scrollbar
} else {
// Event from vertical scrollbar
// Determine the type of event
int type = evt.getAdjustmentType();
switch (type) {
case AdjustmentEvent.UNIT_INCREMENT:
// Scrollbar was increased by one unit
break;
case AdjustmentEvent.UNIT_DECREMENT:
// Scrollbar was decreased by one unit
break;
case AdjustmentEvent.BLOCK_INCREMENT:
// Scrollbar was increased by one block
break;
case AdjustmentEvent.BLOCK_DECREMENT:
// Scrollbar was decreased by one block
break;
case AdjustmentEvent.TRACK:
// The knob on the scrollbar was dragged
break;
// Get current value
int value = evt.getValue();
and also i worked with
import java.awt.Adjustable;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
* @author a385078
public class XmlComparison {
/** Creates a new instance of Main */
public XmlComparison() {
System.out.println("Inside the Constructor");
* @param args the command line arguments
public static void main(String[] args) {
// TODO code application logic here
JButton b1 = new JButton("XML 1");
     JButton b2 = new JButton("XML 2");
     JButton b3 = new JButton(" Compare ");
     JTextArea t1 = new JTextArea(10,10);
     JTextArea t2 = new JTextArea(10,10);
     JFrame myFrame = new JFrame("XML diff");
     JScrollPane scrollingArea1 = new JScrollPane(t1);
JScrollPane scrollingArea2 = new JScrollPane(t2);
scrollingArea1.setBorder(BorderFactory.createEmptyBorder(10,5,10,5));
scrollingArea2.setBorder(BorderFactory.createEmptyBorder(10,5,10,5));
     myFrame.setSize(1200, 900);
myFrame.setLocation (50,50);
Container content = myFrame.getContentPane();
content.setBackground(Color.GRAY);
//content.setLayout(new FlowLayout());
content.setLayout(null);
t1.setBounds(10,10,430,850);
t2.setBounds(620,10,470,850);
b1.setBounds(450,10,90,30);
b2.setBounds(1100,10,90,30);
b3.setBounds(400,1100,30,30);
content.add(t1);
content.add(b1);
content.add(t2);
content.add(b2);
content.add(b3);
content.add(scrollingArea1);
content.add(scrollingArea2);
     myFrame.setVisible(true);
but its not working , can any one help me with it .

Answer 1

Hello, as far as I can see you have declared and created your JScrollPane while passing in your first JTextArea in this line here...
JScrollPane scrollingArea = new JScrollPane(t1);...but then you set the bounds of the t1 textarea and add it, but you should set the bounds of scrollingArea and add it.
so...
t1.setBounds(10,10,430,850);
content.add(t1);should be....
scrollingArea.setBounds(10,10,430,850);
content.add(scrollingArea);Appologies if this isn't your problem, but its the interpretation I got