StringBuffer: It is a class in java whose object represents the mutable string. It is just like string class except that its object can be modified. StringBuffer is synchronized, hence it is thread-safe.
StringBuilder: It is same as StringBuffer except that StringBuilder is not synchronized, hence it is not thread-safe.
StringBuffer is synchronized whereas StringBuilder is not synchronized.
Java interview questions on string handling
- Why string objects are immutable in java?
- How many ways we can create the string object?
- Why java uses the concept of string literal?
- What is the basic difference between string and stringbuffer object in java?
- What is the difference between stringbuffer and stringbuilder class in java?
- How to create immutable class in java?
- What is the purpose of toString() method in java?
- Is string a keyword in java?
- Is string a primitive type or derived type?
- What is string constant pool in java?
- What are mutable and immutable objects in java?
- What is string intern in java?
- Can we call string class methods using string literals?