How to Check if String is Empty in Java - Step by Step Examples

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How to Check if String is Empty in Java ?

Answer

To check if a string is empty in Java, you can use the isEmpty() method of the String class.

✐ Examples

1 Check if String is Empty using isEmpty method

In this example,

We create a string named str1 with a value of an empty string "".
We use the isEmpty() method on str1 to check if it is empty.
The isEmpty() method returns true if the string is empty, otherwise false.
Finally, we print the result to the console.

Java Program

// Using isEmpty method
public class Main {
    public static void main(String[] args) {
        String str1 = "";
        boolean isEmpty = str1.isEmpty();
        System.out.println("Is string empty: " + isEmpty);
    }
}

Output

Is string empty: true

2 Check if String is Empty using isEmpty method with non-empty string

In this example,

We create a string named str2 with a value of "Hello World".
We use the isEmpty() method on str2 to check if it is empty.
The isEmpty() method returns true if the string is empty, otherwise false.
Finally, we print the result to the console.

Java Program

// Using isEmpty method with non-empty string
public class Main {
    public static void main(String[] args) {
        String str2 = "Hello World";
        boolean isEmpty = str2.isEmpty();
        System.out.println("Is string empty: " + isEmpty);
    }
}

Output

Is string empty: false

Summary

In this tutorial, we learned How to Check if String is Empty in Java language with well detailed examples.

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How to Check if String is Empty in Java - Step by Step Examples

How to Check if String is Empty in Java ?

Answer

✐ Examples

1 Check if String is Empty using isEmpty method

Java Program

Output

2 Check if String is Empty using isEmpty method with non-empty string

Java Program

Output

Summary

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