java Scanner + String练习

从C++来适应java还真是不习惯，只能从最基础的代码开始写了

代码目的：

统计一个字符串里的元音字母数目：

C++风格代码:

import java.io.*;
import java.util.Scanner;

public class Modify
{
static public String ss;
static public int n;
public static void main(String args[])
{
Scanner scStr = new Scanner(System.in);
ss = scStr.next();
int length = ss.length();
char trans[] = ss.toCharArray();
int sum = 0;
for(int i = 0; i < length;++i){
if(trans[i] == 'a' || trans[i] == 'e' || trans[i] == 'i' || trans[i] == 'o' || trans[i] == 'u'
|| trans[i] == 'A' || trans[i] == 'E' || trans[i] == 'I' || trans[i] == 'O' || trans[i] == 'U')
{
++sum;
}
}
System.out.println(trans);
System.out.println("total vowel number is " + sum);
}
}

ps:1.import.util.Scanner不要忘记加了

2.ss和n都要设定为静态变量（因为main是静态方法，只能访问类变量，这一点和C++很相似）

3.主类名和java文件名相同