String s = new String("hello");
String t = new String("hello");
char c [ ] = {'h', 'e', 'l', 'l', 'o'};下列哪些表达式返回 true
s.equals(t);
t.equals( );
s==t;
t.equals (new String("hello"));
String s = new String("hello");
String t = new String("hello");
char c [ ] = {'h', 'e', 'l', 'l', 'o'};下列哪些表达式返回 true
s.equals(t);
t.equals( );
s==t;
t.equals (new String("hello"));