ansaurus

Question

Why Java JTextArea doesn't receive the entire pasted text?

Answer 1

+1 A:

Here's an example I made like the tutorial. With enough heap space, I can paste more than 200,000 lines. Are you maybe missing an exception on the event queue?

import javax.swing.*;
import java.awt.*;

public class JTextAreaPasteTest {

    private String testStr = "Paste text here.";

    public static void main(String argv[]) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                new JTextAreaPasteTest();
            }
        });
    }

    public JTextAreaPasteTest () {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JDialog.EXIT_ON_CLOSE);
        PasteArea wrapArea = new PasteArea("Paste text here.");
        frame.setLayout(new FlowLayout());
        frame.add(new JScrollPane(wrapArea));
        frame.pack();
        frame.setVisible(true);
    }

    private static class PasteArea extends JTextArea {

        public PasteArea(String str) {
            super(str, 20, 40);
            this.setLineWrap(true);
            this.setWrapStyleWord(true);
            this.setCaretPosition(str.length());
        }
    }
}

Catalina Island 2010-02-09 18:29:17

Can you please write comments on your code? and please clarify which part control the size of the heap? Thanks!

MAK 2010-02-09 19:14:56

Nothing in the source code controls the size of the heap. It's a command-line option.

finnw 2010-02-10 10:54:22

@MAC: More comments? LOL, that's what my boss says! Really, the tutorial explains it better, and the others are right about the heap.

Catalina Island 2010-02-10 18:48:40

Answer 2

+1 A:

The Java Virtual Machine takes two command line arguments which set the initial and maximum heap sizes:

-Xms and -Xmx. For example if you want to give your Java program a 64Mb initial and 256Mb maximum heap size you could launch it as follows:

java -Xms64m -Xmx256m my_prog

Tim Drisdelle 2010-02-10 15:23:48

I believe that from within NetBeans you can customize the "runtime" environment and VMArgs that it will use.

Tim Drisdelle 2010-02-10 15:24:26

ansaurus

tags:

views:

answers:

Why Java JTextArea doesn't receive the entire pasted text?

related questions