Date: 2014mar24 Update: 2025oct11 Language: Java Keywords: append Q. Java: How to prepend (add at the start) of a StringBuffer A. Use insert with position zero as shown in this full example:

class Demo { public static final void main(String[] args) { StringBuffer sb = new StringBuffer(); sb.append("World"); sb.insert(0, "Hello "); // <-- Prepending System.out.println("sb=" + sb); } }

Output:

sb=Hello World