Is null the same as void in Java?

Void means that a method does not return a result. Null means that an object reference does not currently reference an object (in other words, it references nothing).

What datatype is null in Java?

In Java(tm), “null” is not a keyword, but a special literal of the null type. It can be cast to any reference type, but not to any primitive type such as int or boolean. The null literal doesn’t necessarily have value zero. And it is impossible to cast to the null type or declare a variable of this type.

Does void return null Java?

Since JDK 1.1, Java provides us with the Void type. Its purpose is simply to represent the void return type as a class and contain a Class public value. It’s not instantiable as its only constructor is private. Therefore, the only value we can assign to a Void variable is null.

What is void called in Java?

void is a Java keyword. Used at method declaration and definition to specify that the method does not return any type, the method returns void . It is not a type and there is no void references/pointers as in C/C++.

Is void and null same?

The difference between null and void as term for nothing stems from their place in physical space. A void is nothing but takes up space; null is nothing at all. In other words, you could measure a void but null offers nothing to measure. 4.1 Void is used to indicate that a function/method does not return any data type.

What is void and null?

Canceled, invalid, as in The lease is now null and void. This phrase is actually redundant, since null means “void,” that is, “ineffective.” It was first recorded in 1669.

Is null a datatype?

Null is a special data type which can have only one value: NULL. A variable of data type NULL is a variable that has no value assigned to it.

Is void a type in Java?

The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the Java keyword void. Yes, void is definitely type, meaning ‘nothing’.

What is void class in Java?

The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the Java keyword void.

Can void * be null?

void is a datatype. void* is just a pointer to an undefined type. A void* can be set to any memory location. A NULL pointer is a any pointer which is set to NULL (0).