String z=new String("hello");
String k=new String("hello");
System.out.println(z==k);
System.out.println(z.equals(k));
的结果是false true
而String z="hello";
String k="hello";
System.out.println(z==k);
System.out.println(z.equals(k));
的结果是true true呢?
求讲解!!