inher11.java

《Java编程基础、应用与实例》 源文件下载

public class Inher11{
  public static void main(String[] args){
    String s1=new String("abc");
    String s2=new String("abc");
    System.out.println(s1==s2);
    System.out.println(s1.equals(s2));
    
    String s3="abc";
    String s4="abc";
    System.out.println(s3==s4);
    System.out.println(s1.equals(s2));
  }
}