Tell me some difference between String builder and String buffer?

Differences between String builder and String buffer in Java

• StringBuffer is synchronized that is, thread-safe. It indicates that two threads may not describe the practices of StringBuffer concurrently. Whereas StringBuilder is non-synchronized which means that it is not thread-safe. It indicates that two threads may describe the processes of StringBuilder concurrently.
• Again, StringBuffer is less effective than StringBuilder. Whereas StringBuilder is more effective than StringBuffer.
• StringBuffer had been the single option for String administration till Java 1.4 but it produces one problem that each of its common methods is synchronized. Thus, StringBuffer produces Thread safety but on production value.
• Mostly, we do not apply String in a multithreaded situation, so Java 1.5 launched a distinct type StringBuilder that is alike to StringBuffer except for synchronization and thread-safety.