//Programm zur Erlaeuterung von String-Referenzen public class Strings { public static void main(String[] args) { String a = "Hello, world!"; String b = "Hello, world!!".substring(0, 13); String c = "Hello, "; c = c + "world!"; String d = "Hello, w"+"orld!"; String e = a.substring(0, 13); System.out.println((a == b) + " " + a.equals(b)); System.out.println((a == c) + " " + a.equals(c)); System.out.println((a == d) + " " + a.equals(d)); System.out.println((a == e) + " " + a.equals(e)); } }