Question

The method is defined as below:

public static void checkNotNull<T extends Throwable>(Object value, String name, Class<T> exceptionClass) 
{

}

then the compiler throws some error:

**Multiple markers at this line

- void is an invalid type for the variable checkNotNull
- Duplicate field ValidationUtility.value
- Syntax error on token ">", Identifier expected after this token
- The type Class is not generic; it cannot be parameterized with 
 arguments <T>
- The type Class is not visible
- Duplicate field ValidationUtility.exceptionClass
- T cannot be resolved to a type
- Syntax error, insert ";" to complete FieldDeclaration
- Duplicate field ValidationUtility.String**

Is anything wrong? Please help me, thank you.

Answer 1

void checkNotNull<T extends Throwable>(...,Class<T> exceptionClass) is a wrong syntax. It Should be <T extends Throwable>void checkNotNull(...,Class<T> exceptionClass)

public static <T extends Throwable> void checkNotNull(Object value, String name, 
                                                      Class<T> exceptionClass) {}