MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

/*line 0 starts at 0, ends at 5
line 1 starts at 5, ends at 12
line 2 starts at 12, ends at 16
    
offset 0 is on line 0
offset 1 is on line 0
offset 2 is on line 0
offset 3 is on line 0
offset 4 is on line 0
offset 5 is on line 1
offset 6 is on line 1
offset 7 is on line 1
offset 8 is on line 1
offset 9 is on line 1
offset 10 is on line 1
offset 11 is on line 1
offset 12 is on line 2
offset 13 is on line 2
offset 14 is on line 2
offset 15 is on line 2
offset 16 is on line 2
offset 17 is on javax.swing.text.BadLocationException: Can't translate offset to line
*/
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.text.BadLocationException;

public class MainClass {
    public static void main(String[] args) {
        JTextArea ta = new JTextArea();
        ta.setLineWrap(true);
        ta.setWrapStyleWord(true);
        JScrollPane scroll = new JScrollPane(ta);

        ta.append("www.\n");
        ta.append("java2s\n");
        ta.append(".com");

        try {
            for (int n = 0; n < ta.getLineCount(); n += 1)
                System.out.println("line " + n + " starts at " + ta.getLineStartOffset(n) + ", ends at "
                        + ta.getLineEndOffset(n));
            System.out.println();

            int n = 0;
            while (true) {
                System.out.print("offset " + n + " is on ");
                System.out.println("line " + ta.getLineOfOffset(n));
                n += 1;
            }
        } catch (BadLocationException ex) {
            System.out.println(ex);
        }

        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(scroll, java.awt.BorderLayout.CENTER);
        f.setSize(150, 150);
        f.setVisible(true);
    }
}