Java String to Lower Case示例 Java String包含示例 Java compareTo()方法比较字符串 Java String to Lower Case示例 import java.io.*; public class Test { public static void main(String args[]) { String Str = new String("Welcome to codingdict.com"); System.out.print("Return Value :"); System.out.println(Str.toLowerCase()); } } Java String包含示例 Java compareTo()方法比较字符串