Java Long class

Java Class getClasses() Method

Last Updated : 17 Mar 2025

The getClasses() method of java Class class returns an array containing the Class objects which represents all the public classes and interfaces that are members of the class represented by the Class object.

Syntax

Parameter

Returns

Returns an array of class object.

Throws

SecurityException

Example 1

import java.lang.*;

public class ClassgetClassesExample1  {

   public static void main(String[] args) {

      try {
         
         Class clsobj = Class.forName("ClassgetClassesExample1");

         Class[] totcls = clsobj.getClasses();
         for (int i = 0; i < totcls.length; i++) {
            System.out.println("Class  " +i+ "  = " + totcls[i].getName());
         }
      } catch (ClassNotFoundException e) {
         System.out.println(e.toString()); //coverting exception object to string and printing it
      }
   }

   public class subclass1 {
      public subclass1() {
         System.out.println("subclass Class1");
      }
   }

   public class subclass2 {
      public subclass2() {
         System.out.println("subclass2 Class2");
      }
   }

   private class PrivatesubClass {
      public PrivatesubClass() {
         System.out.println("subclass Private Class");
      }
   }
}

Output:

Class  0  = ClassgetClassesExample1$subclass2
Class  1  = ClassgetClassesExample1$subclass1

Example 2

import java.io.Serializable;
import java.util.Arrays;

public class ClassgetClassesExample2  {

    public static void main(String... args) {
        Class<?>[] classarry = ClassgetClassesExample2.class.getClasses();
        Arrays.stream(classarry).forEach(System.out::println);
    }

    public class  Class1 extends Class2 implements Cloneable {
    }

    public class  Class2 implements Serializable {

    }

    public interface Interface1 extends Serializable {
    }

    public static class StaticClass {
    }

    public static class MainSuperClass {

    }
}

Output:

class ClassgetClassesExample2$MainSuperClass
class ClassgetClassesExample2$StaticClass
interface ClassgetClassesExample2$Interface1
class ClassgetClassesExample2$Class2
class ClassgetClassesExample2$Class1

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Java Class getClasses() Method

Syntax

Parameter

Returns

Throws

Example 1

Example 2

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Java Class getClasses() Method

Syntax

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Example 1

Example 2

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