类继承java

Question

我有一个主要的类，用户输入数据后，我想去另一个类。我不知道如何去下一个类，并继承java代码中的值x和y。

public class main { 
        int x=25; 
        int y =25; 
        //Go to next class second 
        } 

public class second { 
        //inherit values of x and y 
        //manipulate values 
        //Go to next class third 
        } 

public class third { 
        //inherit values of x and y from second class 
        //manipulate values 
        } 

Answer 1

public class Main { 
        int x=25; 
        int y =25; 
        //Go to next class second 
        aMethod(){ 
        Second s = new Second(); 
        s.manipulateValues(x,y); 
        } 
        } 

public class Second { 
        //inherit values of x and y 
        //manipulate values 
        //Go to next class third 
         public void manipulateValues(int x, int y){ 
          //manipulate here 
          Third t = new Third(); 
          s.manipulateHereToo(x,y); 
         } 
        } 

public class Third { 
        //inherit values of x and y from second class 
        //manipulate values 
         public void manipulateHereToo(int x, int y){ 
          //manipulate again 
         } 
        } 

所以你无须使用继承。

Answer 2

public class second extends main{ 
        //inherit values of x and y 
        //manipulate values 
        //Go to next class third 
        } 

public class third extends main{ 
        //inherit values of x and y from second class 
        //manipulate values 
        } 

Answer 3

您可以从另一个类使用extends关键字继承。

public class First { 
    int x = 25; 
    int y = 25; 
} 
//Class Second inherits (extends) from class First. 
//This class will inherit from First, all its values (x and y). 
public class Second extends First { 
    public Second() { 
     //Here we change the values of x and y in Second's constructor. 
     x = 26; 
     y = 26; 
    } 
} 

Answer 4

我不认为你的意思是在这里继承。你只是想通过这些值来做其他类来对它们进行计算吗？

如果你确实意味着继承，为了构建已经给出的另一个答案，你可能想要像这样修改它。

public class second extends main{ 
        //inherit values of x and y 
        //manipulate values 
        //Go to next class third 
        } 

public class third extends second{ 
        //inherit values of x and y from second class 
        //manipulate values 
        } 

Answer 5

您描述的问题与继承无关。 解决方案似乎是一个两步骤的过程。

1. Learn Java。
2. 将所需的值作为参数传递给方法调用。