what are the methods under immutable string?(the common methods only)?

Question

it's about java

Answer 1

http://tns-www.lcs.mit.edu/manuals/java-api-1.1beta2/api/java.lang.String.html

Answer 2

Why don't you look that up on Java's official site? Immutability is an abstract idea not some programming construct; it means the data in memory is locked against writing so all the methods are returning a String a copy of the String of the original with appropriate slicing and dicing applied to that String.