Check Whether A String Is Not Null And Not Empty

To check whether a String is not null and not empty in Java, you can use the following code:

public static boolean isNotNullAndNotEmpty(String str) {
    return str != null && !str.isEmpty();

Here’s how you can use this method in your code:

String myString = "Hello World";
if (isNotNullAndNotEmpty(myString)) {
    // String is not null and not empty
    System.out.println("String is not null and not empty");
} else {
    // String is either null or empty
    System.out.println("String is either null or empty");

If the str argument is not null and its length is greater than 0, the method will return true, indicating that the string is not null and not empty. Otherwise, it will return false.

About the Author Rex

I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!