How to create a Vector of Size N in Java - Step by Step Examples

How to create a Vector of Size N in Java ?

Answer

To create a vector of size N in Java, you can use the Vector class from the java.util package and initialize it with a specific size and default value.

✐ Examples

1 Create a Vector of Integers of Size N

In this example,

We import the java.util.Vector class.
We create a Vector of integers using the Vector class.
We use a for loop to add n elements, each set to a default value of 0, to the vector.
The vector is then assigned to a variable named intVector.
Finally, we use a for-each loop to iterate over the vector and print each element.

Java Program

import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        int n = 5;
        Vector<Integer> intVector = new Vector<>(n);
        for (int i = 0; i < n; i++) {
            intVector.add(0);
        }
        for (int num : intVector) {
            System.out.print(num + " ");
        }
    }
}

Output

0 0 0 0 0

2 Create a Vector of Strings of Size N

In this example,

We import the java.util.Vector class.
We create a Vector of strings using the Vector class.
We use a for loop to add n elements, each set to a default value of an empty string "", to the vector.
The vector is then assigned to a variable named strVector.
Finally, we use a for-each loop to iterate over the vector and print each element.

Java Program

import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        int n = 5;
        Vector<String> strVector = new Vector<>(n);
        for (int i = 0; i < n; i++) {
            strVector.add("");
        }
        for (String str : strVector) {
            System.out.print('"' + str + '"' + " ");
        }
    }
}

Output

"" "" "" "" ""

3 Create a Vector of Booleans of Size N

In this example,

We import the java.util.Vector class.
We create a Vector of booleans using the Vector class.
We use a for loop to add n elements, each set to a default value of false, to the vector.
The vector is then assigned to a variable named boolVector.
Finally, we use a for-each loop to iterate over the vector and print each element.

Java Program

import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        int n = 5;
        Vector<Boolean> boolVector = new Vector<>(n);
        for (int i = 0; i < n; i++) {
            boolVector.add(false);
        }
        for (Boolean bool : boolVector) {
            System.out.print(bool + " ");
        }
    }
}

Output

false false false false false

Summary

In this tutorial, we learned How to create a Vector of Size N in Java language with well detailed examples.

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How to create a Vector of Size N in Java - Step by Step Examples

How to create a Vector of Size N in Java ?

Answer

✐ Examples

1 Create a Vector of Integers of Size N

Java Program

Output

2 Create a Vector of Strings of Size N

Java Program

Output

3 Create a Vector of Booleans of Size N

Java Program

Output

Summary

More Java Vectors Tutorials