Method Class | getName() Method in Java
The getName() method of java.lang.reflect.Method class is helpful to get the name of methods, as a String. To get name of all methods of a class, get all the methods of that class object. Then call getName() on those method objects.
Syntax:
public String getName()
Return Value: It returns the name of the method, as String.
Example:
Method:public void getValue(){}
getName() returns: getValue
Explanation: The getName() function on object of above method returns name of method
which is getValue.
Method:public void paint(){}
getName() returns: paint
Below programs illustrates getName() method of Method class:
Example 1: Print name of all methods of Method Object.
/** Program Demonstrate how to apply getName() method* of Method Class.*/import java.lang.reflect.Method; public class GFG { // Main method public static void main(String[] args) { try { // create class object Class classobj = GFG.class; // get list of methods Method[] methods = classobj.getMethods(); // get the name of every method present in the list for (Method method : methods) { String MethodName = method.getName(); System.out.println("Name of the method: " + MethodName); } } catch (Exception e) { e.printStackTrace(); } } // method name setValue public static int setValue() { System.out.println("setValue"); return 24; } // method name getValue public String getValue() { System.out.println("getValue"); return "getValue"; } // method name setManyValues public void setManyValues() { System.out.println("setManyValues"); }} |
Output:
Name of the method: main Name of the method: getValue Name of the method: setValue Name of the method: setManyValues Name of the method: wait Name of the method: wait Name of the method: wait Name of the method: equals Name of the method: toString Name of the method: hashCode Name of the method: getClass Name of the method: notify Name of the method: notifyAll
Example 2: Program to check whether class contains a certain specific method.
/** Program Demonstrate how to apply getName() method* of Method Class within a class*/import java.lang.reflect.Method; public class GFG { // Main method public static void main(String[] args) { String checkMethod = "method1"; try { // create class object Class classobj = democlass.class; // get list of methods Method[] methods = classobj.getMethods(); // get the name of every method present in the list for (Method method : methods) { String MethodName = method.getName(); if (MethodName.equals(checkMethod)) { System.out.println("Class Object Contains" + " Method whose name is " + MethodName); } } } catch (Exception e) { e.printStackTrace(); } }}// a simple classclass democlass { public int method1() { return 24; } public String method2() { return "Happy hours"; } public void method3() { System.out.println("Happy hours"); }} |
Output:
Class Object Contains Method whose name is method1
Reference:
https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html#getName–
