Java Class getGenericSuperClass() Method

The getGenericSuperClass() method of java Class class returns the Type representing the direct superclass of the class, interface, primitive type or void represented by this Class.

Syntax

Parameter

Does not take the parameter.

Returns

the direct superclass of the class represented by this object.

Throws

GenericSignatureFormatError TypeNotPresentException MalformedParameterizedTypeException

Example 1

//import statements

import java.lang.reflect.*;
import java.util.ArrayList;

public class ClassgetGenericSuperClassExample1 {

   public static void main(String args[]) {

      
      Type tp = Integer1.class.getGenericSuperclass();
      System.out.println(tp); 
    
      ParameterizedType pt = (ParameterizedType)tp;
      System.out.println(pt.getActualTypeArguments()[0]);
   }
}

class Integer1 extends ArrayList<Integer> {
   public Integer1() {
      
   }
}

Test it Now

Output:

java.util.ArrayList<java.lang.Integer>
class java.lang.Integer

Example 2

//import statements...


import java.lang.reflect.*;
import java.util.ArrayList;

public class ClassgetGenericSuperClassExample2 {

   public static void main(String args[]) {

      
      Type tp1 = Float1.class.getGenericSuperclass();
      System.out.println(tp1); 
    
      ParameterizedType pt1 = (ParameterizedType)tp1;
      System.out.println(pt1.getActualTypeArguments()[0]);
      
      System.out.println("------------------------------------------------------");
      
      Type tp2 = String1.class.getGenericSuperclass();
      System.out.println(tp2); 
    
      ParameterizedType pt2 = (ParameterizedType)tp2;
      System.out.println(pt2.getActualTypeArguments()[0]);
   }
}

class Float1 extends ArrayList<Float> {
   public Float1() {
      
   }
}

class String1 extends ArrayList<String> {
   public String1() {
      
   }
}

Test it Now

Output:

java.util.ArrayList<java.lang.Float>
class java.lang.Float
------------------------------------------------------
java.util.ArrayList<java.lang.String>
class java.lang.String

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