public class StringVergleich_uebung2 {

 public static void main(String[] args) {
   String s1 = new String("123");
   String s2 = new String("123");
   String s3 = "123";
   String s4 = "123";
   System.out.println("String s1 = new String(\"123\");");
   System.out.println("String s2 = new String(\"123\");");
   System.out.println("Vergleich s1 == s2 liefert: " + (s1 == s2));
   System.out.println("Vergleich s1.equals(s2) liefert: " + s1.equals(s2));
   System.out.println("Vergleich s2.equals(s1) liefert: " + s2.equals(s1));
   System.out.println("String s3 = \"123\";");
   System.out.println("String s4 = \"123\";");
   System.out.println("Vergleich s3 == s4 liefert: " + (s3 == s4));
 }

}