Exception is already defined in this compilation unit import java.lang.Exception;

Question

Trying to create custom exception am extending the Exception class, which is resulting in the error

error: Exception is already defined in this compilation unit

If you remove the import statement --> import java.lang.Exception

then new set of errors is coming below

--------------------Configuration: --------------------

E:\ArjunJava\Exception.java:29: error: incompatible types: MyException cannot be converted to Throwable

throw new MyException("Array size is less than what you are referencing");
    ^

E:\ArjunJava\Exception.java:35: error: incompatible types: MyException cannot be converted to Throwable

    catch(MyException me)
          ^

E:\ArjunJava\Exception.java:37: error: cannot find symbol

System.out.println("Exception caught "+me.getMessage()); 
symbol:   method getMessage() location: variable me of type MyException

E:\ArjunJava\Exception.java:15: error: constructor Exception in class Exception cannot be applied to given types;

super(message);
    ^
required: no arguments
found: String
reason: actual and formal argument lists differ in length

4 errors

Process completed.

import java.lang.Exception;

class MyException extends Exception {
   MyException(String message) {
    super(message);
   }
}

public class Exception {
   public static void main (String[] args) {
      // array of size 4. 
      int[] arr = new int[4];//Referring 5th Element 
      try {
        int i = arr[4]; // this statement causes an exception 
        throw new MyException("Referring to element more than Array size");
      } 
      catch(MyException me) {
        System.out.println("Exception caught : "+me.getMessage()); 
      }
   } 
}

Output:

Exception caught : Referring to element more than Array size