Class.getClasses() has the following syntax.
public Class <?>[] getClasses()
In the following code shows how to use Class.getClasses() method.
//w w w. j a v a 2 s.c o m public class Main { public static void main(String[] args) throws Exception { Class cls = Class.forName("java.lang.String"); Class[] classes = cls.getClasses(); for (int i = 0; i < classes.length; i++) { System.out.println("Class found = " + classes[i].getName()); } } } class MyClass { public class InnerClass1 { public InnerClass1() { System.out.println("Inner Class1"); } } public class InnerClass2 { public InnerClass2() { System.out.println("Inner Class2"); } } private class InnerPrivateClass { public InnerPrivateClass() { System.out.println("Inner Private Class"); } } }