Question

Hi Sorry for Asking on the Same Question..

I am Running my project in Netbeans

 String  build_path=getClass().getProtectionDomain().getCodeSource().getLocation().getPath();
command.add(build_path+"i_view32.exe"); command.add(source_p+"/import_pal="+pal_file+"/convert="+ Dest_p+"");

This is Working fine in NetBeans but When i am Running the build from command prompt

java -jar "D:\Pallete\dist\Pallete.jar"

Gives me Following Exception:

java.lang.NullPointerException
        at pal.btn_OkActionPerformed(pal.java:214)
        at pal.access$100(pal.java:22)
        at pal$2.actionPerformed(pal.java:85)
        at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)

When I click on Ok Button it throws Exception at line 214

public static String  jarpath ;
public static String  buildpath;
    buildpath  = getClass().getClassLoader().getResource("").getPath();
    jarpath=getClass().getProtectionDomain().getCodeSource().getLocation().getPath()

Answer 1

If line 214 is getClass().getClassLoader().getResource("").getPath();, and getResource("")
is the actual code, then this is failing. It tries to call getPath() on a null object.