Java字符串到整数的转换[重复]

Question

可能重复：
How to convert string to int in Java?

我正在尝试弄清楚如何将包含整数的字符串转换为整数变量。

代码：

import java.util.Scanner;

public class main {
    public static void main(String args[]) {
        Scanner input = new Scanner(System.in);
        System.out.println("Enter date of birth (MM/DD/YYYY):");
        String DOB = input.next();
        String month = DOB.substring(0, 1);
        String day = DOB.substring(3, 4);
        String year = DOB.substring(6, 9);
        int month1 = month;
        int age = 0;
        //age = 2013 - DOB - 1;
        int age2 = 0;
        age2  = age + 1;
        System.out.println("You are " + age + " or " + age2 + " years old");
    }
}

我想把String month、String day和Sting year变成整数。

Answer 1

使用 int month = Integer.parseInt(stringMonth);