I declared String s1=null and s2="Hello" by using s1.equals(s2) it shows NullPointer Exception why?
49
What is a NullPointerException, and how do I fix it?
132398
What is null in Java?
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
69771
NullPointerException when setting attribute?
141442
Why does my string comparison fail?
80631
NullPointerException but compiling?
97224
Implementing the equals method in java
38780
Checking for null before ToString()
152780
what is the difference between null != object and object!=null
99447
What is the difference between String? and String! (two ways of creating an optional variable)?
54143
Why is the default value of the string type null instead of an empty string?
107844
How does the .ToString() method work?
87189
System.NullPointerException
23586
What is the difference between String.Empty and "" (empty string)?
144361
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
6882
try catch exception always returns null
8283
Why does null reference print as "null"