JTextArea Scrollers

[corbokhan]

Hey everyone,

I've been working on this problem for some time now and I'm still not able to figure it out.

I have two separate JTextAreas sitting next to each other in the same JPanel. I cannot figure out how to add a scroller to either of them. When the JTextArea is filled with text, it continues to fill up only I can't scroll down.

I've tried JScrollPanes but It still won't work, any suggestions?

[al_Marshy_1981]

Can you post what you have tried? Are you adding the JTextArea to the JScrollPane?

[corbokhan]

This is a part of the program.

public static class ContentPanel extends JPanel implements ActionListener {

JButton resetButton;
JButton spinIt;
JTextField titleText;
String clear = "";
String beenSpun;

ContentPanel() {

setLayout(null);
setBackground(Color.LIGHT_GRAY);

// ------ Action Listeners ------

// ------ JLabels ------
JLabel titleLabel = new JLabel("Title");
titleLabel.setBounds(50,35,50,20);
titleLabel.setForeground(Color.BLACK);
titleLabel.setBackground(Color.GRAY);
titleLabel.setFont(new Font("Serif",Font.BOLD,14));
titleLabel.setOpaque(true);
JLabel bodyLabel = new JLabel("Body");
bodyLabel.setBounds(50,85,50,20);
bodyLabel.setForeground(Color.BLACK);
bodyLabel.setBackground(Color.GRAY);
bodyLabel.setFont(new Font("Serif",Font.BOLD,14));
bodyLabel.setOpaque(true);
JLabel title = new JLabel("New Article Spinner Interface");
title.setBounds(350,10,300,30);
title.setForeground(Color.BLACK);
title.setBackground(Color.LIGHT_GRAY);
title.setFont(new Font("Tahoma", Font.BOLD, 18));
title.setOpaque(true);

// ------ JScrollPane ------
JScrollPane bodyScroll = new JScrollPane(bodyText);

// ------ LineBorder ------
LineBorder border = new LineBorder(Color.GRAY, 2, true);

// ------ JTextArea ------
titleText = new JTextField();
titleText.setBounds(50,60,900,30);
titleText.setBorder(border);
bodyText = new JTextArea();
bodyText.setBounds(50,110,440,500);
bodyText.setBorder(border);
bodyText.setEditable(true);
bodyText.setLineWrap(true);
bodyText.add(bodyScroll);
spunText = new JTextArea();
spunText.setBounds(510,110,440,500);
spunText.setBorder(border);
spunText.setEditable(false);
spunText.setLineWrap(true);
wordCount = new JTextField(" Word Count: ");
wordCount.setBounds(510,620,150,40);
wordCount.setBackground(Color.LIGHT_GRAY);
wordCount.setEditable(false);
// ------ JButtons ------
spinIt = new JButton("Spin It!");
spinIt.addActionListener(this);
spinIt.setBounds(850,625,100,40);
resetButton = new JButton("Reset");
resetButton.addActionListener(this);
resetButton.setBounds(750,625,100,40);

add(spinIt);
add(resetButton);
add(titleText);
add(bodyText);
add(spunText);
add(wordCount);
add(title);

}


I've tried a few other things but none of them seem to work. Any recommendations? Thanks for the help.

[pbrockway2]

Does that compile? You have "JScrollPane bodyScroll = new JScrollPane(bodyText);" but I don't see bodyText declared anywhere. Later you have "bodyText.add(bodyScroll);".

It's best to post something that compiles and runs to illustrate the problem. This might involve constructing a small example of the problem (without all the font/label/etc stuff which isn't part of the problem.)

[pbrockway2]

I meant to add: do read the section in Oracle's Tutorial on How to Use Text Areas as more or less the first thing it addresses is using scroll panes.

[al_Marshy_1981]

This runs by itself.....have a look at the changes I made, I put comments where i made them
edit: you will need to resize the JFrame....

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;
import javax.swing.border.LineBorder;
public class TextAreaScroll extends JPanel implements ActionListener {

	JButton resetButton;
	JButton spinIt;
	JTextArea bodyText=null;
	JTextArea spunText=null;
	JTextField wordCount=null;
	JTextField titleText;
	JFrame frame=null;
	String clear = "";
	String beenSpun;

	TextAreaScroll() {

	setLayout(null);
	setBackground(Color.LIGHT_GRAY);

	// ------ Action Listeners ------

	// ------ JLabels ------
	JLabel titleLabel = new JLabel("Title");
	titleLabel.setBounds(50,35,50,20);
	titleLabel.setForeground(Color.BLACK);
	titleLabel.setBackground(Color.GRAY);
	titleLabel.setFont(new Font("Serif",Font.BOLD,14));
	titleLabel.setOpaque(true);
	JLabel bodyLabel = new JLabel("Body");
	bodyLabel.setBounds(50,85,50,20);
	bodyLabel.setForeground(Color.BLACK);
	bodyLabel.setBackground(Color.GRAY);
	bodyLabel.setFont(new Font("Serif",Font.BOLD,14));
	bodyLabel.setOpaque(true);
	JLabel title = new JLabel("New Article Spinner Interface");
	title.setBounds(350,10,300,30);
	title.setForeground(Color.BLACK);
	title.setBackground(Color.LIGHT_GRAY);
	title.setFont(new Font("Tahoma", Font.BOLD, 18));
	title.setOpaque(true);

	// ------ JScrollPane ------
        // set to null
	JScrollPane bodyScroll = null;

	// ------ LineBorder ------
	LineBorder border = new LineBorder(Color.GRAY, 2, true);

	// ------ JTextArea ------
	titleText = new JTextField();
	titleText.setBounds(50,60,900,30);
	titleText.setBorder(border);
	bodyText = new JTextArea();
	
	bodyText.setBorder(border);
	bodyText.setEditable(true);
	bodyText.setLineWrap(true);
	// only adding bodyText to JScrollPane
	bodyScroll=new JScrollPane(bodyText);
        // ScrollPane gets bounds
	bodyScroll.setBounds(50,110,440,500);
	spunText = new JTextArea();
	spunText.setBounds(510,110,440,500);
	spunText.setBorder(border);
	spunText.setEditable(false);
	spunText.setLineWrap(true);
	wordCount = new JTextField(" Word Count: ");
	wordCount.setBounds(510,620,150,40);
	wordCount.setBackground(Color.LIGHT_GRAY);
	wordCount.setEditable(false);
	// ------ JButtons ------
	spinIt = new JButton("Spin It!");
	spinIt.addActionListener(this);
	spinIt.setBounds(850,625,100,40);
	resetButton = new JButton("Reset");
	resetButton.addActionListener(this);
	resetButton.setBounds(750,625,100,40);

	add(spinIt);
	add(resetButton);
	add(titleText);
        // add ScrollPane not the TextArea
	add(bodyScroll);
	add(spunText);
	add(wordCount);
	add(title);
	frame=new JFrame();
	frame.getContentPane().add(this);
	frame.setSize(1000,600);
	frame.setVisible(true);
	}

	@Override
	public void actionPerformed(ActionEvent arg0) {
		// TODO Auto-generated method stub
		
	}
	
	public static void main(String[]args){
		new TextAreaScroll();
	}
}

[corbokhan]

Ok I understand now. I appreciate the help!