用equals和compareTo方法比较字符串

/*来自 
 n  o  w  j  a  v  a . c o m*/

public class Main {

  public static void main(String[] args) {

    String apple = new String("Apple") ;

    String orange = new String("Orange") ;

    

    System.out.println(apple.equals(orange));

    System.out.println(apple.equals(apple));

    System.out.println(apple == apple);

    System.out.println(apple == orange);

    System.out.println(apple.compareTo(apple));

    System.out.println(apple.compareTo(orange));

  }//时 代 J a v a 提供

}