Java之从键盘输入一串英文使其首字母大写

Posted 2022-03-23 随笔都是学习笔记

import java.util.Scanner;

public class Test1 
    public static void main(String[] args) 
        System.out.println(reserve());
    
    public static String reserve() 
        try (Scanner sc = new Scanner(System.in)) 
            String str = sc.next();
            String sub = str.substring(0,1).toUpperCase() + str.substring(1,str.length());
            return sub;