StringBuilder and StringBuffer

StringBuilder and StringBuffer — a practical guide to Java StringBuilder StringBuffer with clear examples you can reuse in real projects.

Java Tutorial Series (27/90). Prefer one article? Read the complete Java tutorial.

Short description

Prefer `StringBuilder` for most single-threaded string building. `StringBuffer` is synchronized.

StringBuilder

StringBuilder sb = new StringBuilder();
sb.append("Hello").append(' ').append("Java");
System.out.println(sb.toString());