CODEWITHSUNDEEP
javastringio
IceKing
IceKing

Reputation: 29

How do you get rid of null in a String in Java?

I have this string "nullRobert Luongo 431-232-1233 Canada"

and I'd like to get rid of the null character. I don't know how it got there, but I would like to get rid of it.

Upvotes: 2

Views: 12296

Answers (4)

user4089220
user4089220

Reputation:

You can use this.

String stringWithoutNull = stringWithNull.replaceAll("null", "");

Upvotes: 0

Parth Satra
Parth Satra

Reputation: 523

Option 1: Recommended

I would suggest you to look into the issue from where the string is contains 'null' and fix it at the source rather than using hacks.

Option 2: Not recommended

But still if you want to replace the null from it then you can use the following. But it is not recommended as it can replace a proper word containing 'null' in it and make the string junk.

The following replaces the first instance of 'null' with empty String.

string.replace("null", "");

You can also replace all the instances of 'null' with empty String using replaceAll.

string.replaceAll("null", "");

Upvotes: 0

adhg
adhg

Reputation: 10863

It's likely that you get it because you did something like this:

String s = null;
.
.
.
s+="Robert Luongo 431-232-1233 Canada"; //mind the +=

One way to correctly do it is by:

String s= "";

Upvotes: 4

Hovercraft Full Of Eels
Hovercraft Full Of Eels

Reputation: 285405

You're concatenating a String that is null -- don't do that. Initialize the String at least with ""

So rather than

String myString;

When you do this and later do:

myString += "something";

you'll get `nullsomething

So instead assign an empty String to the String of interest when you declare it.

String myString = "";

Upvotes: 3

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