Difference between StringBuffer and StringBuilder

Difference between StringBuffer and StringBuilder

StringBuilder vs StringBuffer

• Both are mutable classes
• StringBuffer is that it is synchronized which means it is  thread-safe
• slow than StringBuilder
• StringBuilder is not synchronized it is faster than StringBuffer

Example of StringBuilder and StringBuffer:

StringBuffer strBuffer = new StringBuffer("Test Example");
strBuffer.append("1");

StringBuilder strBuilder = new StringBuilder("Test Example");
strBuilder.append("2");