Static Methods Can:
Static Methods cannot:
In C and C++, a static function is a function that is only visible from within the scope of the translation unit in which it is defined. While this is a useful method of encapsulating a function (essentially hiding it from other translation units), the compiler can also take advantage of the fact that it has all the information required to statically bind the function to its callers and, in some cases, inline expand those calls to improve efficiency. By contrast, non-static functions may be invoked from with several translation units, but the compiler cannot "see" the other translation units (each translation unit is compiled independently, even if two or more can be compiled concurrently) so it cannot see every call and therefore cannot bind those calls to the function (which may well be defined in yet another translation unit). Instead, whenever it encounters a call or a definition, the compiler adds a symbolic entry to the dynamic section of the object file so that the linker can locate both the function and all its callers and thus bind them at link-time.
Static keyword when used with a method, specifies that this method belongs to the class and not a particular instance of the class (a.k.a object of the class)
Ex:
public class StaticTest {
public static String getAuthorName() {
return "Anand";
}
}
Here getAuthorName is the static method and it can be accessed without instantiating an object of the class StaticTest. You can access this method as:
String authorName = StaticTest.getAuthorName();
The Restrictions are:
a. The static methods can access only other static methods
b. Static methods cannot access instance methods
c. Static methods cannot access instance variables
Some restrictions are:
Every method in java that isn't a class (static) method is automatically "virtual." If you want to disable virtual overrides, make the method "final" in the base class.
In C there are functions only, In Java methodsonly (static methods as well), in C++ both.
Static java method is the same as a static variable. They belong to a class and not an object of that class. If a method needs to be in a class, but not tied to an object, then one uses static java.
No, static variables are not serialized.
There is no separate entity as a static object in java. The static keyword in java is used to signify that the member (either a variable or a method) is not associated to an object instance of the class. It signifies the fact that the member belongs to the class as a whole. The words static and objects are opposites of one another so you cannot have a static object. However, you can declare an object as a class level variable which could be referred to as a static object but it will be referred to as a static or class variable and not a static object.
Every method in java that isn't a class (static) method is automatically "virtual." If you want to disable virtual overrides, make the method "final" in the base class.
In C there are functions only, In Java methodsonly (static methods as well), in C++ both.
Static membors partispating in Overwriting in java?
Static java method is the same as a static variable. They belong to a class and not an object of that class. If a method needs to be in a class, but not tied to an object, then one uses static java.
A function is a piece of code that can be reused by calling its name while a method is a function that is associated with a class. In Java, functions are usually referred to as static methods.
A class cannot have more than one static main method.
No, static variables are not serialized.
yes bcoz static variables
Who create Java & when? Why he create java ? What are mane functions of it?
In Java, a function is called a "method". In Java as well as other languages, a method is a function defined specifically for one class. In Java, this is the only way to define functions, therefore, all functions are methods.In Java, a function is called a "method". In Java as well as other languages, a method is a function defined specifically for one class. In Java, this is the only way to define functions, therefore, all functions are methods.In Java, a function is called a "method". In Java as well as other languages, a method is a function defined specifically for one class. In Java, this is the only way to define functions, therefore, all functions are methods.In Java, a function is called a "method". In Java as well as other languages, a method is a function defined specifically for one class. In Java, this is the only way to define functions, therefore, all functions are methods.
There is no separate entity as a static object in java. The static keyword in java is used to signify that the member (either a variable or a method) is not associated to an object instance of the class. It signifies the fact that the member belongs to the class as a whole. The words static and objects are opposites of one another so you cannot have a static object. However, you can declare an object as a class level variable which could be referred to as a static object but it will be referred to as a static or class variable and not a static object.
public static void main