Java语言中的权限修饰符

public class Ball {

    //成员变量(属性)
    private String name;
    private int weight;

// get/set方法  当属性为private的时候，在别的类和包中中调用的时候，需要用get/set方法
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
    public int getWeight() {
        return weight;
    }
    public void setWeight(int weight) {
        this.weight = weight;
    }