In Java programming language, strings are treated as objects. The Java platform provides the String class to create and manipulate strings. Whereas, StringBuffer class is a thread-safe, mutable sequence of characters . A string buffer is like a String, but can be modified.
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All String Methods MethodDescriptionReturn Typesubstring()Returns a new string which is the substring of a specified stringStringtoCharArray()Converts this string to a new character arraychar[]toLowerCase()Converts a string to lower case lettersStringtoString()Returns the value of a String objectStringJava String Methods – W3Schools www.w3schools.com › java › java_ref_string
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