Java String.trim() regular expression string replacement

string.trim()

String.trim()Removing space from left and right of a string.
Here are some examples with output.
Replacing extra space from beginning and end of the string.

String str = " plus2net ";
System.out.println(str.trim()); //plus2net

We will check the length of the string before and after applying trim()

String str = " plus2net ";
System.out.println(str.length()); // 10
String str_short=str.trim();
System.out.println(str.trim()); //plus2net
System.out.println(str_short.length()); //8

After using trim() the length has decreased from 10 to 8.

All String functions

replace() substring() startsWith() getChars() Java - Tutorials

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string.trim()

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