Because, the main method is the starting point of the java program and if we need an object of that class even before the main can be invoked, it is not possible. Hence it is declared static so that the JVM Can acess the main method without having to instantiate that particular class
No. You will get compilation errors. The complier will complain that you are trying to access non static variables from inside a static method. A static method can access only static variables.
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();
yes we can call a static method with object
Shortly, you can not.Different approaches are however available.1. Put your non static method in different class. Then call it from your static content by first instantiating the class.2. Make a duplicate static method for your non static method and use from your static content.
Main method in java is always static as main method id the only method from where the program execution starts,and as we all know that main method is defined inside a class so JVM needs to make a object of the class to call the method and objects are build inside the main method ,so to execute the main method it has to make objects of the class but objects are build inside main method so that's the reason that main method is static so that JVM can execute the main method without making its object as static members can be called by class anme only
Yes, it is possible to call a static method from a non-static method. However, it is not possible to call a non-static method from a static method without first having an instance to operate on.
Yes.
It is uss to define class and method of pogrom's.
No. You will get compilation errors. The complier will complain that you are trying to access non static variables from inside a static method. A static method can access only static variables.
we cannot use the staic keyword inside the method... But we can use the final keyword inside the method....
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();
I assume the question is about Java. How you call a method from inside the main method depends on whether this is an instance method or a static method. To call an instance method, you need to have a valid instance. Say foo is an instance of class Foo, which was created inside the main method. Then to call the instance method implode() use foo.implode() To call the static method bar() of class Foo, use Foo.bar().
Yes, we can access all methods which declare with static means then we can access.. ex: class s{ static method() { System.out.println("Welcome"); } } class fun{ public static void main(String args[]) { method(); } }
Yes, a static method may be overloaded.
in java a method is said to be static if 'static 'keyword is used before the method name . foe ex.- static void show(){ ........ } this method has the following property-- 1. it can invoke only a static method. 2. it can't be reffered using keyword 'this','super'. 3.static method can access only a STATIC MEMBER VARIABLE or STATIC CLASS VARIABLE . 4. there should not be static & non static version of a nethod in a class . 5.static method can be used before the creation of d object of dt class.
The main method is called by the jvm when your program is executed. The main method is a static method: public static void main(String[] args) {} A static method is method that can be run without instantiate the class (creating an object from it) The main method is a static method. No other static method could replace it's functionality. PS By static method do you mean static initialiser? I often use static initialisers instead of a main method, but in these cases you must still have a main method, albeit an empty one ie. public static void main(String[] args) {} Notice that the method has an empty body A main method must be used if you intend to accept parameters at run time from the jvm.
yes we can call a static method with object