StringBufferDemo.java

/** * StringBufferDemo: construct the same String three different ways. */ public class StringBufferDemo { public static void main(String[] argv) { String s1 = "Hello" + ", " + "World"; System.out.println(s1); // Build a StringBuffer, and append some things to it. StringBuffer sb2 = new StringBuffer( ); sb2.append("Hello"); sb2.append(','); sb2.append(' '); sb2.append("World"); // Get the StringBuffer's value as a String, and print it. String s2 = sb2.toString( ); System.out.println(s2); // Now do the above all over again, but in a more // concise (and typical "real-world" Java) fashion. StringBuffer sb3 = new StringBuffer( ).append("Hello"). append(',').append(' ').append("World"); System.out.println(sb3.toString( )); // Exercise for the reader: do it all again but without // creating ANY temporary variables. } }