What is the difference between String and StringBuffer in Java?
Is there a maximum size for String?
What is the difference between String and StringBuffer in Java? Is there a maximum
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What is the difference between String and StringBuffer in Java?
Is there a maximum size for String?
Stringis used to manipulate character strings that cannot be changed (read-only and immutable).StringBufferis used to represent characters that can be modified.Performance wise,
StringBufferis faster when performing concatenations. This is because when you concatenate aString, you are creating a new object (internally) every time sinceStringis immutable.You can also use
StringBuilderwhich is similar toStringBufferexcept it is not synchronized. The maximum size for either of these isInteger.MAX_VALUE(231 – 1 = 2,147,483,647) or maximum heap size divided by 2 (see How many characters can a Java String have?).More information here.