How Fast Can your Java String Operation's Be?

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The String class is used to manipulate character strings that cannot be changed. In simple terms, objects of type String are read only and immutable. The StringBuffer class is used to represent characters that can be modified. The significant performance difference between these two classes is that StringBuffer is faster than String when performing simple concatenations.

Operations using Strings in Java

In String manipulation code, character strings are routinely concatenated. Using the String class, concatenations are typically performed as follows:

Code:

String str = new String ("Hello ");
str += "World!!";

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