Given a string str, the task is to check if this string is empty or not, in Java.
Examples:
Input: str = "" Output: True Input: str = "GFG" Output: False
Approach:
- Get the String to be checked in str
- We can simply check if the string is empty or not using the isEmpty() method of String class
Syntax:if (str.isEmpty())
- Print true if the above condition is true. Else print false.
Below is the implementation of the above approach:
// Java Program to check if // the String is empty in Java class GFG { // Function to check if the String is empty public static boolean isStringEmpty(String str) { // check if the string is empty or not // using the isEmpty() method // and return the result if (str.isEmpty()) return true; else return false; } // Driver code public static void main(String[] args) { String str1 = "GeeksforGeeks"; String str2 = ""; System.out.println("Is string \"" + str1 + "\" empty? " + isStringEmpty(str1)); System.out.println("Is string \"" + str2 + "\" empty? " + isStringEmpty(str2)); } } |
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Output:
Is string "GeeksforGeeks" empty? false Is string "" empty? true
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