I am using eclipse IDE.
I have a code which throws NullPointerException
and I am handling the exception using try/catch
block
This is my code -
String name = null;
int length = 0;
try {
length = name.length();
System.out.println("Number of letters in name: " + length);
} catch(NullPointerException e) {
System.out.println("NullPointerException occured");
}
System.out.println("I am being executed");
within the try
block
on the line having identifier
length
I am having the warning -
Null pointer access: The variable name can only be null at this location
I am trying to suppress the warning by using -
@SuppressWarnings("all")
length = name.length();
Here on the line having identifier
length
I am having the error -
Multiple markers at this line -
- Syntax error on token "length", VariableDecalaratorId expected after this token
- Null pointer access: The variable name can only be null at this location
- length cannot be resolved to a type
How to resolve this problem?
I don't want my program to show this warning as I am aware of what I am doing.
Thanks to the comment by @Slaw for this answer -
I modified my code in the following way -
String name = null;
int length = 0;
boolean flag = false;
if(flag) {
name = "abcd";
}
try {
length = name.length();
System.out.println("Number of letters in name: " + length);
} catch(NullPointerException e) {
System.out.println("NullPointerException occured");
}
System.out.println("I am being executed");
Now I longer have the warning.
Here, as suggested by @Slaw I made sure that the variable
name
has a chance of not being null
.
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