java - 在 Java 中访问私有(private)变量

Question

我想从下面的代码中访问实例变量total time:

public abstract class Controller{
    protected int currentTime; 
    protected int totalTime; 
    protected Agent[][][] player; 

在下面的代码中

public class S2842663BloodBankAgent extends BloodBankAgent {

    private BoardComponentList knownBloodBanks; 
    private BoardComponentList knownDonor; 

    public S2842663BloodBankAgent(){
        super(); 
        knownBloodBanks = new BoardComponentList(); 
        knownDonor = new BoardComponentList();
    }

    public S2842663BloodBankAgent( BoardComponent bC ) {
        super( bC ); 
    }
}

Answer 1

将 getter 方法添加到 Controller 类中:

...
public int getTotalTime() {
    return totalTime;
}
...

编辑:然后在另一个类中访问它(在初始化 Controller 之后)。

...
Controller controller = new Controller();
//...do necessary things.
int time = controller.getTotalTime();
...