How to check string is null or not in java

Ask Question. Asked 10 years, 9 months ago. Active 1 year, 3 months ago. Viewed 99k times. Improve this question. Add a comment. Active Oldest Votes. Checking for null is done via if string! Improve this answer. Bozho Bozho k gold badges silver badges bronze badges. Everyone of us should spend a couple of minutes a day reading what apache commons can do for us! You can do it with the following code: if string!

RoflcoptrException RoflcoptrException Checking for null is done by: string! But null and empty are two different things. Use TextUtils Method. Parameters: str the string to be examined Returns: true if str is null or zero length if TextUtils. Kishan Vaghela Kishan Vaghela 7, 4 4 gold badges 38 38 silver badges 64 64 bronze badges. U can found here : developer. Beware, it's only available since Java SE 1. You have to check str. Jarvis 8, 3 3 gold badges 23 23 silver badges 54 54 bronze badges.

Kalpana Kalpana 1 1 gold badge 7 7 silver badges 21 21 bronze badges. IvoC IvoC 86 7 7 bronze badges. Related Topics Java String isEmpty. Java String contains. Java String equalsIgnoreCase. Java String equals. Java String compareTo. Java String compareToIgnoreCase. Java Program to Check if a String is Empty or Null In this program, you'll learn to check if a string is empty or null using a method and the if-else statement in Java. To understand this example, you should have the knowledge of the following Java programming topics: Java if Share on:.

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