Example of StringBuffer append method.

public class StringBufferAppendMethod
{
    public static void main(String surat[])
{
        StringBuffer sb = new StringBuffer();

        sb.append(" Append String: ");
  String str = "JCG";
sb.append(str);

        sb.append("\n Append boolean: ");
boolean b = true;
sb.append(b);

        sb.append("\n Append char: ");
char c = 'a';
sb.append(c);

        sb.append("\n Append char array: ");
char[] ca = new char[] {'J','C','G'};
sb.append(ca);

        sb.append("\n Append double: ");
double d = 1.0;
sb.append(d);

        sb.append("\n Append float: ");
float f = 1.0f;
sb.append(f);

        sb.append("\n Append int: ");
int i = 1;
sb.append(i);
     
sb.append("\n Append Object: ");
  Object obj = new String("JCG");
        sb.append(obj);

        System.out.println(sb.toString());
    }
}

Output: