/Java/How to check null and empty string in java

How to check null and empty string in java

if(str != null && !str.isEmpty())
Be sure to use the parts of && in this order, because java will not proceed to evaluate the second part if the first part of && fails, thus ensuring you will not get a null pointer exception from str.isEmpty() if str is null.

Check if a string is empty java

if (myString == null || myString.equals(""))
			throw new IllegalArgumentException("empty string");

Similar codes

4 votes153 views3 answers
Bukkit scheduler
Java
22 votes158 views1 answer
Swing disable button
Java
7 votes81 views3 answers
Incremento java
Java
0 vote142 views1 answer
Request.iter_content(1024 * 1024)
Java
0 vote128 views1 answer
Main methode java
Java
0 vote147 views1 answer
Component spring
Java Spring
9 votes124 views3 answers
Array minimum element
Java
0 vote135 views2 answers
Sets
Java
29 votes144 views6 answers
Remove first character from string
Java
22 votes121 views5 answers
Binary Tree Height
Java