Java String matches() 方法 Java String length() 方法 Java String regionMatches() ignoreCase Java String matches() 方法 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.matches("(.*)Tutorials(.*)")); System.out.print("Return Value :" ); System.out.println(Str.matches("Tutorials")); System.out.print("Return Value :" ); System.out.println(Str.matches("Welcome(.*)")); } } Java String length() 方法 Java String regionMatches() ignoreCase