Question

I wrote the basic code below and saved to a file called pdf.java.

package pdf;

import java.util.*;
import java.io.*;
import com.lowagie.text.DocumentException;
import org.xhtmlrenderer.pdf.ITextRenderer;
import java.util.regex.*;

public class pdf {

    public static void main(String[] args) throws IOException, DocumentException{
        System.out.println("Hello World2!");
    }

}

I then compiled it like this,

javac pdf.java -cp core-renderer.jar:iText-2.0.8.jar

Which seemed to work as I got a pdf.class file. I then tried to run it with the following command.

java pdf

And I got the following output,

Exception in thread "main" java.lang.NoClassDefFoundError: pdf (wrong name: pdf/pdf)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)

What am I doing wrong?

Thanks in advance.

Answer 1

When you compiled it so, the pdf.class was generated in current directory. Change it to:

javac -cp core-renderer.jar:iText-2.0.8.jar -d . pdf.java 

Which will generate pdf.class in ./pdf subdirectory. Then run it as follows:

java -cp .:core-renderer.jar:iText-2.0.8.jar -d . pdf.java