Java Can'；t似乎将int转换为string并运行我的程序，使其输出330

我做了一些家庭作业调试，我似乎无法让代码运行。。。java新手，如有任何反馈，将不胜感激

public class Errors {

    public static void main(String[] args) {

        System.out.println("Welcome to my first program!\n");

        String ageStr = "24 years";

        int age = Integer.parseInt(ageStr);

        System.out.println("I'm " + age + " years old.");

        int three = "3";
        int threeToString = Integer.parseInt(three);

        int answerYears = age + three;

        System.out.println("Toal number of years: " + answerYears);

        int answerMonths = answerYears * 12;

        System.out.println("In 3 years and 6 months, I'll be " + answerMonths + " months old");

        // Once you've corrected all the errors, the answer should be 330.
    }

}

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有一些错误，但我解决了，下面是答案。非常基本的东西。我希望你能得到它

public class Errors {

    public static void main(String[] args) {

        System.out.println("Welcome to my first program!\n");

        String ageStr = "24";                           //24years is wrong input, enter only 24

        int age = Integer.parseInt(ageStr);

        System.out.println("I'm " + age + " years old.");

        String three = "3";
        int ageToString = Integer.parseInt(ageStr);
        int threeToString = Integer.parseInt(three);
        int answerYears = ageToString + threeToString;

        System.out.println("Toal number of years: " + answerYears);

        int answerMonths = answerYears * 12 + 6;                //you forgot to add 6 months

        System.out.println("In 3 years and 6 months, I'll be " + answerMonths + " months old");

        // Once you've corrected all the errors, the answer should be 330.
    }

}

更改

String ageStr=“24年”到
字符串ageStr=“24”，
int three=“3”
到
String three=“3”，
int-answerYears=年龄+三岁至<代码>内回答年份=年龄+三岁字符串应该可以编译，但我强烈建议您花时间学习这些基础知识