Can someone please explain this error message to me?

Question

java.lang.ClassNotFoundException: Didn't find class "null.Loop" on path: DexPathList[[dex file "/storage/emulated/0/JavaNIDE/operators/app/build/dexedClasses/classes.dex"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at com.duy.android.compiler.java.Java.run(Java.java:91)
at com.duy.ide.javaide.run.activities.ExecuteActivity.executeDex(ExecuteActivity.java:147)
at com.duy.ide.javaide.run.activities.ExecuteActivity.exec(ExecuteActivity.java:124)
at com.duy.ide.javaide.run.activities.ExecuteActivity.access$100(ExecuteActivity.java:45)
at com.duy.ide.javaide.run.activities.ExecuteActivity$1.run(ExecuteActivity.java:88)
at java.lang.Thread.run(Thread.java:818)
Suppressed: java.lang.ClassNotFoundException: Didn't find class "null.Loop" on path: DexPathList[[directory "."],nativeLibraryDirectories=[/...

Answer 1

Michael Sengwayo you tried to install package the class same causing the error... once removed it ran fine.

Answer 2

Michael Sengwayo here was the fix here... run the code

https://code.sololearn.com/cmcr4zyxrUyx/?ref=app

Answer 3

Thank you very much. Understand it now.

Answer 4

Are you using an android ide?

Answer 5

Yes. Java N-IDE.

Answer 6

You can post the code to check if it is your code the problem or the problem of the ide.

Answer 7

Michael Sengwayo this would be easier to diagnose with your code here so we could establish and help correct the error.
Thanks.

Answer 8

package com.My_Calculation;

public class MyCalculation {

class Calculation {
int z;

public void addition(int x, int y) {
z = x + y;
System.out.println("The sum of the given numbers:"+z);
}

public void Subtraction(int x, int y) {
z = x - y;
System.out.println("The difference between the given numbers:"+z);
}
}

public class MyCalculation extends Calculation {
public void multiplication(int x, int y) {
z = x * y;
System.out.println("The product of the given numbers:"+z);
}

public static void main(String args[]) {
int a = 20, b = 10;
MyCalculation demo = new MyCalculation();
demo.addition(a, b);
demo.Subtraction(a, b);
demo.multiplication(a, b);
}
}

}

Answer 9

Very welcome Michael Sengwayo