我们应该总是使用@NotNull还是@Nullable？(Should we always use @NotNull or @Nullable?)

 我们是否应该始终在方法参数中使用@NotNull或@Nullable ，即使它看起来很明显？ 
 
@NotNull
public static int add(@NotNull int a, @NotNull int b) {
    return a + b;
}
 
 澄清： 
 
 现在我知道一个不能将null传递给原始变量，但我想问一下，如果我有一个可以传递null的方法（使用非原始参数），但是从方法的名称可以看出，你不能传递null，例如，你不能添加一些东西为null ？ 
 
@NotNull
public static Integer add(@NotNull Integer a, @NotNull Integer b) {
    return a + b;
}

Should we always use @NotNull or @Nullable in method parameters even if it appears to be obvious?
 
@NotNull
public static int add(@NotNull int a, @NotNull int b) {
    return a + b;
}
 
To clarify:
 
Now I know that one can't pass null to primitive variable but I wanted to ask what if I would have a method (with non-primitive parameters) to which null can be passed but from the name of the method it would be obvious that you can't pass null because for example, you can't add something to null?
 
@NotNull
public static Integer add(@NotNull Integer a, @NotNull Integer b) {
    return a + b;
}

原文：https://stackoverflow.com/questions/38675938