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All applications must start their execution from somewhere. In java that is the main method of a class.
Wiki User
∙ 6y ago
Wiki User
∙ 7y agoThe main() method marks the starting point of the program - the Java Virtual Machine knows it should start there. Also, it can optionally accept command-line parameters.
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What is the task of the main method in java platform?
It is the method that gets called when a Java application is started.
What is the task of main method in a java program?
The main method is simply an entry point to your executable code. When you run a Java program, it looks for a main method as the first section of code to execute, which is why all of your programs start there.
How do you print message before main in java?
You cannot do that. The main method of a java class is the point where the execution begins. You can print messages only after a main method is invoked.
What is a getContentPane method in Java?
The getContentPane() method is used to get the main component in a Java Swing JFrame. It is usually a JPanel.
What will happen if a Java Class has no Main Method?
Nothing will happen. There is no restriction that every Java class must have a main method. The only program is that, this class cannot be executed as a standalone java program.
What is void main?
The main method is the first method, which the Java Virtual Machine executes. When you execute a class with the Java interpreter, the runtime system starts by calling the class's main() method. Themain() method then calls all the other methods required to run your application. It can be said that the main method is the entry point in the Java program and java program can't run without this method.The signature of main() method looks like this:public static void main(String args[])The method signature for the main() method contains three modifiers:public indicates that the main() method can be called by any object.static indicates that the main() method is a class method.void indicates that the main() method has no return value.
How do you call main class with in main class in java?
We can't call a class. We always call a method in java.
Why main is used in java?
In java need main() method. without main() in java we won't run the java programe main() signals the entry point to the program - it tells the Java Virtual Machine which is the first program that should be executed.
Are you allowed to declared main method in every class?
Yes. Every Java class can have a main method
Can you overwrite main function in java?
You can not overwrite a static method in Java,and 'main' is a static method.so,you can't overwrite the 'main'.
Why should the java main method has the return type as void?
A void method is one that returns no value. The Java main() method is the first method to be called, therefore it doesn't need to return a value to another Java method, therefore it is declared as void. If something needs to be returned to the operating system, this is done differently, not by "returning a value" in the sense of Java.
Why using the name main for main method in java?
If you run an java file(as an .class or .jar file) there's always 1 method being called: The main(String[] args) method.The method is only called once.Example of an main method:public static void main(String args[]) throws IOException {LoggingBootstrap.bootstrap();gui = new GUI();}In this case it only bootstraps the logger and uses the constuctor method of GUI(the graphical user interface of the program)
