How to Sort a Vector in Java - Step by Step Examples

How to Sort a Vector in Java ?

Answer

To sort a Vector in Java, you can use the Collections.sort method. This method allows you to sort the elements of a Vector in ascending order.

✐ Examples

1 Sort a Vector in Ascending Order

In this example,

We import the necessary classes: java.util.Vector and java.util.Collections.
We create a Vector named vec containing several numeric values.
We call the Collections.sort method, passing the Vector as an argument. This method sorts the elements of the Vector in ascending order.
Finally, we print the sorted Vector to standard output using a for-each loop.

Java Program

import java.util.Vector;
import java.util.Collections;

public class Main {
    public static void main(String[] args) {
        // Step 2: Create a Vector
        Vector<Integer> vec = new Vector<>();
        vec.add(5);
        vec.add(2);
        vec.add(8);
        vec.add(3);
        vec.add(9);
        vec.add(1);
        
        // Step 3: Sort the Vector in ascending order
        Collections.sort(vec);
        
        // Step 4: Print the sorted Vector
        System.out.print("Sorted Vector: ");
        for (int num : vec) {
            System.out.print(num + " ");
        }
        System.out.println();
    }
}

Output

Sorted Vector: 1 2 3 5 8 9

2 Sort a Vector in Descending Order

In this example,

We import the necessary classes: java.util.Vector, java.util.Collections, and java.util.Comparator.
We create a Vector named vec containing several numeric values.
We call the Collections.sort method, passing the Vector and a custom Comparator as arguments. This Comparator sorts the elements of the Vector in descending order.
Finally, we print the sorted Vector to standard output using a for-each loop.

Java Program

import java.util.Vector;
import java.util.Collections;
import java.util.Comparator;

public class Main {
    public static void main(String[] args) {
        // Step 2: Create a Vector
        Vector<Integer> vec = new Vector<>();
        vec.add(5);
        vec.add(2);
        vec.add(8);
        vec.add(3);
        vec.add(9);
        vec.add(1);
        
        // Step 3: Sort the Vector in descending order
        Collections.sort(vec, Collections.reverseOrder());
        
        // Step 4: Print the sorted Vector
        System.out.print("Sorted Vector: ");
        for (int num : vec) {
            System.out.print(num + " ");
        }
        System.out.println();
    }
}

Output

Sorted Vector: 9 8 5 3 2 1

Summary

In this tutorial, we learned How to Sort a Vector in Java language with well detailed examples.

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How to Sort a Vector in Java - Step by Step Examples

How to Sort a Vector in Java ?

Answer

✐ Examples

1 Sort a Vector in Ascending Order

Java Program

Output

2 Sort a Vector in Descending Order

Java Program

Output

Summary

More Java Vectors Tutorials