Java StringBuilder

Interview Questions on StringBuffer and StringBuilder 1.What is a StringBuffer? a)class b)method c)constructor Ans class 2. StringBuffer is mutable. a)True b) False Ans True 3.StringBuffer is not synchronized. a)True b) False And False 4. String buffer creates an empty constructor with an initial capacity. a)12 b)20 c)16 Ans 16 5. String buffer reverse() method. a) […]