What is JavaTuples setAtX() method?

In this article, we will learn JavaTuples setAtX() method,This free JAVA tutorial for complete beginners will help you learn JAVA from scratch.

JavaTuples setAtX() method - ❤️JAVA Tutorials In 2024

The setAtX() method in org.javatuples is used to change the value in the existing tuple, at the index X. Since JavaTuples are immutable, hence changing a value in the existing tuple results in a new tuple with the modified value at the index X. It returns the tuple class object of the called class with the changed value at index X.

Syntax:

Quartet<String, Integer, Double, String> quartet = ...
    ...
Quartet otherQuartet = quartet.setAtX(value);

Here X represents the index at which the value is to be changed.

Return Value: This method returns the tuple class object of the called class with the changed value at index X.

Note: This method do not exists with KeyValue Class, and LabelValue Class.

Below programs illustrate the various ways to use setAtX() methods:

Program 1: When the setAtX() method is used with any class from Unit to Decade, with a direct values as parameter:

// Below is a Java program to demonstrate 
// use of setAtX() method 
  
import java.util.*; 
import org.javatuples.Pair; 
  
class GfG { 
    public static void main(String[] args) 
    { 
        // Creating a Pair with 2 values 
        Pair<String, String> pair = Pair.with("w3wiki", 
                                              "A computer science portal"); 
  
        // Using Pair() method to instantiate unit object 
        Pair otherPair = pair.setAt1("by Sandeep Jain"); 
  
        // Printing the returned Pair 
        System.out.println(otherPair); 
    } 
} 

Output:

[w3wiki, by Sandeep Jain]

Program 2:

// Below is a Java program to demonstrate 
// use of setAtX() method 
  
import java.util.*; 
import org.javatuples.Decade; 
  
class GfG { 
    public static void main(String[] args) 
    { 
        // Using with() method to instantiate Decade object 
        Decade<Integer, Integer, Integer, 
               Integer, Integer, Integer, 
               Integer, Integer, Integer, 
               Integer> 
            decade 
            = Decade.with(Integer.valueOf(1), 
                          Integer.valueOf(2), 
                          Integer.valueOf(3), 
                          Integer.valueOf(4), 
                          Integer.valueOf(5), 
                          Integer.valueOf(6), 
                          Integer.valueOf(7), 
                          Integer.valueOf(8), 
                          Integer.valueOf(9), 
                          Integer.valueOf(10)); 
  
        // Using setAtX() 
        Decade otherDecade = decade.setAt9(100); 
  
        // Printing the formed Decade 
        System.out.println(otherDecade); 
    } 
} 

Output:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 100]

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