Compiler Error J0049

Undefined name 'identifer'

The compiler detected a reference to a class, method, or variable that does not exist. Examples of when this error can occur include:

• A variable is referenced that does not exist or is mistyped.
  
  
• The object used with a method call does not exist or is mistyped.
  
  
• A class is imported that does not exist in the package specified or is mistyped.

Ensure that the reference to the class, method, or variable displayed in the error message is correct and compile again.

The following example illustrates this error:

import java.io.bogus; // error: unknown class name
   
public class Simple {
   
   public int method1(){
      return novar1;
      //error: 'novar1' does not exist
   }
   public void method2(){
      NotSimple nt = new NotSimple();
      np.methodx();
      //error: the object reference 'np' should be 'nt'
}

class NotSimple{
   public void methodx(){
      //do something meaningful here
   }
}