How to check if a Vector is Not Empty in Java - Step by Step Examples

How to check if a Vector is Not Empty in Java ?

Answer

To check if a vector is not empty in Java using java.util.Vector, you can use the isEmpty() method, which returns false if the vector contains elements.

✐ Examples

1 Check if a Numeric Vector is Not Empty

In this example,

We create a Vector named numVec to store numeric values.
We use the isEmpty() method to check if numVec is not empty.
If !numVec.isEmpty() returns true, it means the vector is not empty.
We print a message indicating whether the vector is not empty or not.

Java Program

import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        Vector<Integer> numVec = new Vector<Integer>();
        numVec.add(10);
        numVec.add(20);
        numVec.add(30);
        numVec.add(40);
        numVec.add(50);
        if (!numVec.isEmpty()) {
            System.out.println("Numeric vector is not empty");
        } else {
            System.out.println("Numeric vector is empty");
        }
    }
}

Output

Numeric vector is not empty

2 Check if a String Vector is Not Empty

In this example,

We create a Vector named strVec to store string values.
We use the isEmpty() method to check if strVec is not empty.
If !strVec.isEmpty() returns true, it means the vector is not empty.
We print a message indicating whether the vector is not empty or not.

Java Program

import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        Vector<String> strVec = new Vector<String>();
        strVec.add("apple");
        strVec.add("banana");
        strVec.add("cherry");
        strVec.add("date");
        if (!strVec.isEmpty()) {
            System.out.println("String vector is not empty");
        } else {
            System.out.println("String vector is empty");
        }
    }
}

Output

String vector is not empty

Summary

In this tutorial, we learned How to check if a Vector is Not Empty in Java language with well detailed examples.

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How to check if a Vector is Not Empty in Java - Step by Step Examples

How to check if a Vector is Not Empty in Java ?

Answer

✐ Examples

1 Check if a Numeric Vector is Not Empty

Java Program

Output

2 Check if a String Vector is Not Empty

Java Program

Output

Summary

More Java Vectors Tutorials