public class A {
    private String name;
    private static A instance = new A();

    private A(){}

    public A getInstance() {
        return instance;
    }

    public String getName() {
        return name;
    }
}

public class B {
    private static String name;
    
    private B(){}

    public static String getName() {
        return name;
    }
}
请问: A.getInstance().getName();与B.getName();的区别.