package day01;
public class StringDemo4 {public static void main(String[] args) {String str = "http://www.oracle.com";String sub = str.substring(11,17); System.out.println(sub);sub = str.substring(11);System.out.println(sub);int start = str.indexOf(".");int end = str.indexOf(".",start+1); sub = str.substring(start+1,end);System.out.println(sub);}
}
#运行结果为