Java赋值，为不同类中的变量添加值

Question

目前正在进行分配，但我是编程新手，所以想知道如何向已经具有现有类的不同类中的变量添加值

    class OtherClass {
        int a;
    }
    public class Main Class{
      public static void main(String[] args) {
        int b = 7;
        OtherClass temp = new OtherClass();
        OtherClass.a = 5
        OtherClass.put(b) //this is where I'm not sure how to add b to a
}

实际代码

public static void main(String[] args) { 
// TODO Auto-generated method stub 
System.out.print("Enter amount of money you have: "); 
Scanner input = new Scanner(System.in); 
Wallet bettersWallet = new Wallet(); 
bettersWallet.moneyAvailable = input.nextDouble(); //then had a function which played out a bet and added/took away winnings from the bet 

 int winnings = 5;
 bettersWallet.moneyAvailable +=winnings; //Will setMoneyAvailable function work in this scenario aswell?

}

class Wallet {
    double moneyAvailable;
    double openingCash;
    public void setMoneyAvailable()
    {
        moneyAvailable += ChuckALuckDiceGame.winnings;
    }

Answer 1

int b = 7;
OtherClass temp = new OtherClass();
temp.a = 5;
temp.a += b; //Same as temp.a = temp.a + b;
System.out.println(temp.a);

我们在这里做什么， 我们正在创建一个 OtherClass 类的对象，对象名称为temp 。 然后我们在属性 a 中分配值 5对象 temp

然后我们添加原始变量 b 的值进入变量 temp.a .

上式的总和被赋值为 temp.a 的值

然后我通过 System.out.println(temp.a); 打印最后的总和