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Java Class class getInterfaces() method with example

Class class getInterfaces() method: Here, we are going to learn about the getInterfaces() method of Class class with its syntax and example.
Submitted by Preeti Jain, on November 04, 2019

Class class getInterfaces() method

  • getInterfaces() method is available in java.lang package.
  • getInterfaces() method is used to find the interfaces implemented by the class or an interface denoted by this object.
  • getInterfaces() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
  • getInterfaces() method does not throw an exception at the time of returning an array of interfaces of 'Class' type.

Syntax:

    public Class[] getInterfaces ();

Parameter(s):

  • It does not accept any parameter.

Return value:

The return type of this method is Class[], it returns an array of interfaces of 'Class' type implemented by this Class.

Example:

// Java program to demonstrate the example 
// of Class []  getInterfaces() method of Class 

public class GetInterfacesOfClass {
    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder();
        Class cl = sb.getClass();

        // It returns an array of interfaces represented
        // by the class StringBuilder
        Class[] interfaces = cl.getInterfaces();

        for (int i = 0; i < interfaces.length; ++i) {
            System.out.print("StringBuilder Interfaces: ");
            System.out.println(interfaces[i].toString());
        }
    }
}

Output

StringBuilder Interfaces: interface java.io.Serializable
StringBuilder Interfaces: interface java.lang.Comparable
StringBuilder Interfaces: interface java.lang.CharSequence





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