Method Class | equals() Method in Java

26 May, 2022
The java.lang.reflect.Method.equals(Object obj) method of Method class compares this Method Object against the specified object as parameter to equal(object obj) method. This method returns true if Method object is same as passed object. Two Methods are the same if they were declared by the same class and have the same name and formal parameter types and return type. Syntax:
public boolean equals(Object obj)
Parameter: This method accepts a mandatory parameter obj which is the object to be compared. Return Value: The method return true if Method object is same as passed object as parameter, otherwise false. Below program illustrates equals(Object obj) method of Method class: Examples 1: When both objects are same. 
Java
/** Program Demonstrate equals(Object Obj)* method of Method Class.*/import java.lang.reflect.Method; public class GFG {     public static void main(String[] args)        throws NoSuchMethodException,               SecurityException,               ClassNotFoundException    {         // Get all method of class GFGClass        // and store in an Array of Method Objects        Method[] methods = GFGClass.class.getMethods();         // create a method object by passing        // method name and parameter type        Method method = GFGClass.class                            .getMethod("add", String.class);         System.out.println("First Method object from array "                           + "create by getMethods():");        System.out.println(methods[0]);        System.out.println("Method object created by "                           + "getMethod():");        System.out.println(method);         // compare both objects by equals method        if (methods[0].equals(method)) {            System.out.println("Both Method objects"                               + " are equal");        }        else {            System.out.println("Both Method objects"                               + " are not equal");        }    }} // This is Sample Class for which// the class object are createdclass GFGClass {     // We have two variables in this class     private String field1;     public GFGClass()    {    }     // creating methods    public String add(String field2)    {        return this.field1 + field2;    }}
First Method object from array create by getMethods():
public java.lang.String GFGClass.add(java.lang.String)
Method object created by getMethod():
public java.lang.String GFGClass.add(java.lang.String)
Both Method objects are equal
Example 2: When both objects are not same. 
Java
/** Program Demonstrate equals(Object Obj) method of Method Class.*/import java.lang.reflect.Method; // This is Main Classpublic class GFG {     public static void main(String[] args)    {         // Get all method of class GFGClass        // and store as Array of Method Objects        Method[] methods = GFGClass.class.getMethods();         // select any two method and compare        System.out.println("Methods are :");        System.out.println(methods[0]);        System.out.println(methods[1]);        if (methods[0].equals(methods[1])) {            System.out.println("Methods are equal");        }        else {            System.out.println("Methods are not equal");        }    }} // This is Sample Classclass GFGClass {     // We have two variables in this class    private String field1;    private String field2;     public GFGClass()    {    }     // we have four methods in this class    public String getField1()    {        return field1;    }     public void setField1(String field1)    {        this.field1 = field1;    }     public String getField2()    {        return field2;    }     public void setField2(String field2)    {        this.field2 = field2;    }}
Methods are :
public java.lang.String GFGClass.getField1()
public void GFGClass.setField1(java.lang.String)
Methods are not equal
Reference: https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html#equals-java.lang.Object-
varshagumber28
Java-Functions
Java-lang package
java-lang-reflect-package
Java-Method Class
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