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Of arguments. If there is a change in no of arguments compulsory we have to define a new method. This approach increases length of the code and reduces readability. But from 1. Of arguments such type of methods are called var-arg methods.

We can call or invoke this method by passing any no. Of int values including zero number also. Example: methodOne int a,int Example: methodOne int Case 6: For the var-arg methods we can provide the corresponding type array as argument. Cannot declare both methodOne int Note : 1. Even though above syntax is very strict but the following changes are acceptable to main method. The order of modifiers is not important that is instead of public static we can take static public.

We can declare string[] in any acceptable form o String[] args o String []args o String args[] 3. Instead of args we can use any valid java identifier. We can replace string[] with var-arg parameter. Example: main String No case, in all the cases we will get runtime exception. Case 1 : Overloading of the main method is possible but JVM always calls string[] argument main method only. Case 2: Inheritance concept is applicable for static methods including main method hence while executing child class if the child class doesn't contain main method then the parent class main method will be executed.

The main objective of command line arguments are we can customize the behavior of the main method. Whenever we are writing any component i. Should starts with uppercase letter and if it contains multiple words every inner word should starts with upper case letter. Should starts with upper case letter and if it contains multiple words every inner word should starts with upper case letter.

Serializable 2. Runnable 3. Should starts with lowercase character and if it contains multiple words every inner word should starts with upper case letter. Should starts with lowercase alphabet symbol and if it contains multiple words every inner word should starts with upper case character. Should contain only uppercase characters and if it contains multiple words then these words are separated with underscore symbol. Usually we can declare constants by using public static final modifiers.

Example: Syntax for setter method: 1. Method name should be prefixed with set. It should be public. Return type should be void.

Compulsory it should take some argument. Syntax for getter method: 1. The method name should be prefixed with get. Return type should not be void. It is always no argument method. But recommended to use is. Example: Coding standards for listeners: To register a listener: Method name should be prefixed with add.

Class level binary data includung static variables will be stored in method area. Objects and corresponding instance variables will be stored in Heap area. For every method the JVM will create a Runtime stack all method calls performed by that Thread and corresponding local variables will be stored in that stack. Every entry in stack is called Stack Frame or Action Record.

The instruction which has to execute next will be stored in the corresponding PC Registers. Native method invocations will be stored in native method stacks. Download PDF. This Java programming for beginners course will help you learn basics of Java and advanced concepts. Java is a class-based object-oriented programming language for building web and desktop applications. It is the most popular programming language and the language of choice for Android programming.

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