String vs StringBuilder vs StringBuffer

Javajava

The Question

What is the difference between String, StringBuilder, and StringBuffer?

What a Strong Answer Covers

• String immutable thread-safe slow for concatenation
• StringBuilder mutable not thread-safe fastest
• StringBuffer mutable synchronized thread-safe slower
• use StringBuilder single-threaded
• StringBuffer multi-threaded

Related Questions

• JVM vs JRE vs JDK
• Java Platform Independence
• How JVM Works
• Main Features of Java
• public static void main