1 package zfc; 2  3 public class ZfcShcq { 4  5     public static void main(String[] args) { 6         // TODO Auto-generated method stub 7  8         String str1 = "Hello World !";//创建两个字符串 9         String str2 = "Oracle Java";10         11         String s1 = str1.substring(7,9);//分别截取子串12         String s2 = str2.substring(0,2);13         14 //        System.out.println(s1);//用于调试，查看子串15 //        System.out.println(s2);16         17         if(s1.equalsIgnoreCase(s2))//比较子串，不区分大小写18         {19             System.out.println("两个子串相同");20         }21         else22         {23             System.out.println("两个子串并不相同");24         }25                 26         27         }28 29 }