JavaTuples equal() method

The equals() method in org.javatuples is used to check whether a TupleClass is equal to the TupleClass given as parameter. This method can be used to any tuple class object of javatuples library. It returns a boolean value that is true or false based on the equivalence of that TupleClass with existing TupleClass. Method Declaration:

public final boolean equals(Object obj)

Syntax:

boolean result = TupleClassObject.equals(TupleClass2Object)

Parameters: This method takes TupleClass2Object as parameter where:

• TupleClassObject– represents the JavaTuple Class object used like Unit, Quintet, Decade, etc.
• TupleClass2Object– represents the parameter passed JavaTuple Class object used like Unit, Quintet, Decade, etc.

Return Value: This method returns true if the TupleClassObject is equal to the TupleClass2Object. Else it returns false Below programs illustrate the various ways to use equals() method: Program 1: Using equals() with Unit class: 

Java

// Below is a Java program to use equals() method

import java.util.*;
import org.javatuples.Unit;

class GfG {
    public static void main(String[] args)
    {
        // Creating an Unit with one value
        Unit<String> unit = Unit.with("GeeksforGeeks");

        // Creating another Unit with one value
        Unit<String> unit1 = Unit.with("GeeksNotforGeeks");

        // Using equals() method
        boolean res = unit.equals(unit1);

        System.out.println("Is " + unit + " equal to "
                           + unit1 + " : " + res);
    }
}

Output:

Is [GeeksforGeeks] equal to [GeeksNotforGeeks] : false

Program 2: Using equals() with Quartet class: 

Java

// Below is a Java program to use equals() method

import java.util.*;
import org.javatuples.Quartet;

class GfG {
    public static void main(String[] args)
    {
        // Creating Quartet from List
        List<String> list = new ArrayList<String>();
        list.add("GeeksforGeeks");
        list.add("A computer portal");
        list.add("for geeks");
        list.add("by Sandeep Jain");

        Quartet<String, String, String, String> quartet
            = Quartet.fromCollection(list);

        // Creating Quartet from Array
        String[] arr = { "GeeksforGeeks",
                         "A computer portal",
                         "for geeks",
                         "by Sandeep Jain" };

        Quartet<String, String, String, String> otherQuartet
            = Quartet.fromArray(arr);

        // Using equals() method
        boolean res = quartet.equals(otherQuartet);

        System.out.println("Is \n" + quartet + "\n equal to \n"
                           + otherQuartet + "\n : " + res);
    }
}

Output:

Is 
[GeeksforGeeks, A computer portal, for geeks, by Sandeep Jain]
 equal to 
[GeeksforGeeks, A computer portal, for geeks, by Sandeep Jain]
 : true

Note: Similarly, it can be used with any other JavaTuple Class.