Not able to compile java program

Hi
I a using Netweaver to deelope the java code.I have written a javaprogram .But when choose the option Run as
a javaApplication it giving the following error
Source locator doesnot Exist:org.eclipse.jdt.debug.ui.javaSourceLocator

Hi,
I am able to compile and run perfectly Java programs. The steps goes as:
1. File --> New --> Project --> Java --> Java Project --> give a <project name> --> Finish
2. File --> New --> Class --> give a classname, and package name.
3. Put main method and give a System.out.println("Hello");
Source code:
package com.i3l.trg;
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello");
4.Goto Run --> Run As --> 2 Java Application.
5. You will get a output as "Hello" in java console.
Cheers!!!
Sukanta Rudra
PS: Liberally donate points.
The full source code is

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Hi Java Gurus
I am not able to compile this code Pl help
class For {
public static void main (String [] args) {
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Please suggest me.
What do I do?
Edited by: Ram-Murthy on Apr 10, 2008 2:23 AM

Make sure your main is static.
public static void main(String [] args) {}

Java Mapping - Not able to compile .Java file

Hi Experts,
I am working with a sample scenario which involves Java Mapping. For this I created MappingClass.java file, After compiling the .Java file .Jar file would be used for Java Mapping by using Imported Archives.
After compiling the MappingClass.java file, I am getting the errors as below.
--> Java errors after compilation
C:\j2sdk1.4.2_13\bin>javac MappingClass.java
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                               ^
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import java.util.*;
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Hi
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Errors shown as below.
--> Errors
C:\mytest>javac MappingClass.java
MappingClass.java:2: package com.sap.aii.mapping.api does not exist
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--> End of Errors
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Thanks in advance.
..Sree

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Please identify the problem and offer and/or correct the problem.+_
Thank you very much for helping a new java wana_be programmer!+_
Below is the source code:+_
*===================*_
import java.awt.*;
import java.awt.MediaTracker;
import java.awt.event.*;
import com.sun.image.codec.jpeg.*;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.geom.GeneralPath;
import java.io.*;
import javax.swing.*;
import javax.imageio.*;
import java.net.URL;
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public BufferedImage bimg;
public JFrame shower = new JFrame();
public ImageIcon imgIcon;
public Canvas canvas;
public Image image;
* Constructor
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//No picture, no values
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return bimg.getWidth();
public int getHeight(){
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try{
/*bimg = null;
filename = "file://" + filename;
URL u = new URL(filename);
File f = new File(u.getPath());
bimg = ImageIO.read(f);
Toolkit toolkit = Toolkit.getDefaultToolkit();
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                    System.err.println(ie);
               bimg = new BufferedImage(image.getWidth(null), image.getHeight(null), bimg.TYPE_INT_RGB);
               Graphics g = bimg.getGraphics();
               g.drawImage(image, 0, 0, null);
return true;
catch (Exception e) {return false;}
public void createNewImage(int width, int height){
     bimg = null;
     bimg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
public void repaintImage(){
if (shower.isVisible()){
imgIcon.setImage(bimg.getScaledInstance(bimg.getWidth(), bimg.getHeight(), Image.SCALE_FAST));
shower.repaint();
public void showPictureWithTitle(String s){
if (shower.isVisible()){
imgIcon.setImage(bimg.getScaledInstance(bimg.getWidth(), bimg.getHeight(), Image.SCALE_FAST));
shower.setTitle(s);
shower.repaint();
else {
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shower.getContentPane().add(new JLabel(imgIcon));
shower.setResizable(false);
shower.pack();
shower.show();
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* @exception java.io.IOException raised if the save fails
public boolean saveImage(String newfilename) throws java.io.IOException
FileOutputStream out;
JPEGImageEncoder jpeg;
     File filen;
try {
     filen = new File(newfilename);
     //if (filen.canWrite()){
          //return false;}
out = new FileOutputStream(filen);
catch (Exception e){
System.out.println("Sorry -- that filename ("+newfilename+") isn't working");
return false;
try {
jpeg = JPEGCodec.createJPEGEncoder(out);
catch (Exception e) {
System.out.println("Unable to create a JPEG encoder");
return false;
JPEGEncodeParam param = jpeg.getDefaultJPEGEncodeParam(bimg);
param.setQuality(1.0f,true);
jpeg.encode(bimg,param);
out.close();
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* @param x the x coordinate of the pixel
* @param y the y coordinate of the pixel
* @return the pixel value as an integer
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// to access pixel at row 'j' and column 'i' from the upper-left corner of
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* @param x the x coordinate of the pixel
* @param y the y coordinate of the pixel
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bimg.setRGB(x,y,rgb);
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* @param x the x coordinates of the pixel
* @param y the y coordinates of the pixel
* @return a JavaPixel object representing the requested pixel
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return new JavaPixel(this,x,y);
* Test Main
*@param String[] argvs
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          JavaPicture p = new JavaPicture();
          //p.createNewImage(100,100);
          //p.showPicture();
p.loadImage("D:\\public_html\\Apache2\\webroot\\webpage\\atlanta_skyline.jpg");
p.showPictureWithTitle("Test");
     }

Try this.
import java.awt.Canvas;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
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     public BufferedImage bimg;
     public JFrame shower = new JFrame();
     public ImageIcon imgIcon;
     public Canvas canvas;
     public Image image;
     Constructor
     public void JavaPicture(){
     //No picture, no values
     public int getWidth(){
     return bimg.getWidth();
     public int getHeight(){
     return bimg.getHeight();
     Load image
     public boolean loadImage(String filename){
     try{
     bimg = null;
     filename = "file://"+ filename;
     URL u = new URL(filename);
     File f = new File(u.getPath());
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     try
     mediaTracker.waitForID(0);
     catch (InterruptedException ie)
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     bimg = new BufferedImage(image.getWidth(null), image.getHeight(null), bimg.TYPE_INT_RGB);
     Graphics g = bimg.getGraphics();
     g.drawImage(image, 0, 0, null);
     return true;
     catch (Exception e) {return false;}
     public void createNewImage(int width, int height){
     bimg = null;
     bimg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
     public void repaintImage(){
     if (shower.isVisible()){
     imgIcon.setImage(bimg.getScaledInstance(bimg.getWidth(), bimg.getHeight(), Image.SCALE_FAST));
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     if (shower.isVisible()){
     imgIcon.setImage(bimg.getScaledInstance(bimg.getWidth(), bimg.getHeight(), Image.SCALE_FAST));
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     shower.repaint();
     else {
     shower = new JFrame(s);
     imgIcon = new ImageIcon(bimg.getScaledInstance(bimg.getWidth(), bimg.getHeight(), Image.SCALE_FAST));
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     shower.pack();
     shower.show();
     Saves the image represented by the JavaPicture object onto disk.
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     @exception java.io.IOException raised if the save fails
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     JPEGImageEncoder jpeg;
     File filen;
     try {
     filen = new File(newfilename);
     //if (filen.canWrite()){
     //return false;}
     out = new FileOutputStream(filen);
     catch (Exception e){
     System.out.println("Sorry -- that filename ("+newfilename+") isn't working");
     return false;
     try {
     jpeg = JPEGCodec.createJPEGEncoder(out);
     catch (Exception e) {
     System.out.println("Unable to create a JPEG encoder");
     return false;
     JPEGEncodeParam param = jpeg.getDefaultJPEGEncodeParam(bimg);
     param.setQuality(1.0f,true);
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     @param y the y coordinate of the pixel
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     @param y the y coordinate of the pixel
     @param rgb the new rgb value of the pixel
     public void setBasicPixel(int x, int y, int rgb)
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     @param x the x coordinates of the pixel
     @param y the y coordinates of the pixel
     @return a JavaPixel object representing the requested pixel
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     //p.createNewImage(100,100);
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**MAJOR SPAMMING SCUM BAG ALERT**
I was puzzled in that you asked a SQL Server question in one post and then in another thread asked a Oracle related question... and then I noticed you had cross posted one of your questions at JavaRanch and I was more annoyed....
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http://saloon.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=10&t=002447
You sir -> Michael Byrd -> are a scum sucking dirtbag.
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J2EE by itself is not capable of compiling Java. It requires that a J2SDK be installed first - this is what compiles and runs Java programs. Did you install the combination J2SDK and J2EE, or just the J2EE?
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**MAJOR SPAMMING SCUM BAG ALERT**
I was puzzled in that you asked a SQL Server question in one post and then in another thread asked a Oracle related question... and then I noticed you had cross posted one of your questions at JavaRanch and I was more annoyed....
and then I found this....
http://saloon.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=10&t=002447
You sir -> Michael Byrd -> are a scum sucking dirtbag.
To quickly explain. Mr. Byrd posts his messages (which he copies wholesale from other posters) so that he can get better google caching for the website listed in his profile.
This is such scummy behaviour I don't even know what to say. Other than basically everyone that has ever helped you had totally wasted their time.
You are scum. Your company is scum. I hope you rot in hell.

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URGENT
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Code Snippet
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javac writes the errors in stderr, not in stdout.
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Not able to compile java program

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