Java *此处插入单词*无法解析为变量

我正在为学校做一个项目，似乎找不到这个错误的原因。我对编程非常陌生，非常感谢您的帮助。先谢谢你

import java.util.Scanner;
 public class Lemonade {

public static void main(String[] args) {
    Scanner user = new Scanner(System.in);
    int lemons_per_pitcher = 12;
    int spoons_per_bag = 1000;
    int spoons_per_pitcher = 50;
    System.out.println("Enter the amount of lemons you have.");
    int lemon = user.nextInt();
    System.out.println("Enter the amount of bags of sugar you have.");
    int bags = user.nextInt();
    int spoons = bags * 1000;
    int sugar = spoons / 50;
    int lemons2 = lemon / 12;
    if( lemons2 > sugar){
        int pitcher = lemons2;
    }else{
        int pitcher = sugar;
    }
    if( lemon < 12 || bags < 1){
        System.out.println("You can make a maximum of 0 pitchers");
    } else{
        System.out.println("This is the maximum amount of pitchers you can         make is: " + pitcher);
    }
}

import java.util.Scanner；
公共级柠檬水{
公共静态void main（字符串[]args）{
扫描仪用户=新扫描仪（System.in）；
每罐柠檬数=12；
每袋汤匙数=1000；
int勺子每罐=50；
System.out.println（“输入你有多少柠檬。”）；
int lemon=user.nextInt（）；
System.out.println（“输入您的糖袋数量”）；
int bags=user.nextInt（）；
整匙=袋*1000；
int糖=汤匙/50；
int lemons2=lemon/12；
如果（柠檬2>糖）{
int-pitcher=lemons2；
}否则{
int pitcher=糖；
}
如果（柠檬<12 | |袋<1）{
System.out.println（“最多可以制作0个投手”）；
}否则{
System.out.println（“这是您可以制作的最大投手数量：“+pitcher”）；
}
}

---

}

pitcher

是一个局部值，所以您可以在main方法中定义它

试试这个：

public static void main(String[] args) {
        int pitcher;
        Scanner user = new Scanner(System.in);
        int lemons_per_pitcher = 12;
        int spoons_per_bag = 1000;
        int spoons_per_pitcher = 50;
        System.out.println("Enter the amount of lemons you have.");
        int lemon = user.nextInt();
        System.out.println("Enter the amount of bags of sugar you have.");
        int bags = user.nextInt();
        int spoons = bags * 1000;
        int sugar = spoons / 50;
        int lemons2 = lemon / 12;
        if (lemons2 > sugar) {
            pitcher = lemons2;
        } else {
            pitcher = sugar;
        }
        if (lemon < 12 || bags < 1) {
            System.out.println("You can make a maximum of 0 pitchers");
        } else {
            System.out
                    .println("This is the maximum amount of pitchers you can         make is: "
                            + pitcher);
        }
    }

在您的代码中：

if( lemons2 > sugar){
    int pitcher = lemons2;
}else{
    int pitcher = sugar;
} // pitcher no more exists after block

---

pitcher

是一个局部值，所以您可以在main方法中定义它

试试这个：

public static void main(String[] args) {
        int pitcher;
        Scanner user = new Scanner(System.in);
        int lemons_per_pitcher = 12;
        int spoons_per_bag = 1000;
        int spoons_per_pitcher = 50;
        System.out.println("Enter the amount of lemons you have.");
        int lemon = user.nextInt();
        System.out.println("Enter the amount of bags of sugar you have.");
        int bags = user.nextInt();
        int spoons = bags * 1000;
        int sugar = spoons / 50;
        int lemons2 = lemon / 12;
        if (lemons2 > sugar) {
            pitcher = lemons2;
        } else {
            pitcher = sugar;
        }
        if (lemon < 12 || bags < 1) {
            System.out.println("You can make a maximum of 0 pitchers");
        } else {
            System.out
                    .println("This is the maximum amount of pitchers you can         make is: "
                            + pitcher);
        }
    }

在您的代码中：

if( lemons2 > sugar){
    int pitcher = lemons2;
}else{
    int pitcher = sugar;
} // pitcher no more exists after block

---

问题在于这些条件：

if( lemons2 > sugar){
    int pitcher = lemons2;
}else{
    int pitcher = sugar;
}

当您声明pitcher时，您将其范围限制为仅在直接括号内。也就是说，唯一可以使用可变投手的地方是：

if( lemons2 > sugar){
    int pitcher = lemons2; //Here
}else{
    int pitcher = sugar; //And here
}

在其他任何地方调用它都会给您带来错误

您应该做的是在第一个条件的正上方声明pitcher：

int pitcher = 0;
if( lemons2 > sugar){
    pitcher = lemons2;
}else{
    pitcher = sugar;
}

---

问题在于这些条件：

if( lemons2 > sugar){
    int pitcher = lemons2;
}else{
    int pitcher = sugar;
}

当您声明pitcher时，您将其范围限制为仅在直接括号内。也就是说，唯一可以使用可变投手的地方是：

if( lemons2 > sugar){
    int pitcher = lemons2; //Here
}else{
    int pitcher = sugar; //And here
}

在其他任何地方调用它都会给您带来错误

您应该做的是在第一个条件的正上方声明pitcher：

int pitcher = 0;
if( lemons2 > sugar){
    pitcher = lemons2;
}else{
    pitcher = sugar;
}

---

在我的程序中没有向左间隔的意思。在我的程序中没有向左间隔的意思。我对这个很陌生，确切地知道“局部”变量是什么，非常感谢。哦，好的，我现在明白了。那么，我如何去纠正它，同时将它分配给if语句呢？我对这方面非常陌生，确切地知道“局部”变量是什么，非常感谢。哦，好的，我现在明白了。那么，如何在将其分配给if语句的同时进行更正呢