Java字符串startsWith()方法示例。
String类的startsWith(Stringprefix,inttoffset)方法测试此字符串的子字符串是否从指定索引处开始。
示例
import java.lang.*; public class StringDemo { public static void main(String[] args) { String str = "www.nhooo.com"; System.out.println(str); //要检查的起始字符串 String startstr1 = "nhooo"; String startstr2 = "nhooo"; //检查字符串是否以给定的子字符串和起始索引开头 boolean retval1 = str.startsWith(startstr1); boolean retval2 = str.startsWith(startstr2, 4); //如果字符串以给定的子字符串开头,则输出true- System.out.println("starts with " + startstr1 + " ? " + retval1); System.out.println("string " + startstr2 + " starting from index 4 ? " + retval2); } }
输出结果
www.nhooo.com starts with nhooo ? false string nhooo starting from index 4 ? true