摘要: 常用方法一: import org.junit.Test; public class StringMethodTest { @Test public void test1() { String s1 = "HelloWorld"; System.out.println(s1.length());// 阅读全文
posted @ 2022-09-18 10:32 lai_xinghai 阅读(122) 评论(0) 推荐(0)