Java11新特性：字符串增强

public class Java01 {

public static void main(String[] args) {

// String 增强

//判断字符串是否为空

boolean a = " ".isBlank();//true

System.out.println(a);

//去除字符串首尾空格

String b = " Java ".strip();// "Java"

System.out.println(b);

//去除字符串首部空格

String c = " Java ".stripLeading(); ??// "Java "

System.out.println(c);

//去除字符串尾部空格

String d = " Java ".stripTrailing(); ?// " Java"

System.out.println(d);

//重复字符串多少次

String e = "Java".repeat(3); ????????????// "JavaJavaJava"

System.out.println(e);

//返回由行终止符分隔的字符串集合。

long f = "A\nB\nC".lines().count();// 3

System.out.println(f);

List<String> collect = "A\nB\nC".lines().collect(Collectors.toList());

collect.forEach(System.out::println);

}

}