The java.lang.StringBuffer class is a thread-safe, mutable sequence of characters. Following are the important points about StringBuffer −
import java.lang.*; public class StringBufferDemo { public static void main(String[] args) { StringBuffer buff = new StringBuffer("tuts "); System.out.println("buffer = " + buff); // appends the boolean argument as string to the string buffer buff.append(true); // print the string buffer after appending System.out.println("After append = " + buff); buff = new StringBuffer("abcd "); System.out.println("buffer = " + buff); // appends the boolean argument as string to the string buffer buff.append(false); // print the string buffer after appending System.out.println("After append = " + buff); } }
buffer = tuts After append = tuts true buffer = abcd After append = abcd false