As we discussed in previous question that we can overload main method. We can change the return type for main method but java compiler will refuse to acknowledge it as entry point for our application. Example public class Main { public static String main(String[] args) { System.out.println("main method with "); return "w3schools.com"; } }public class … Read more

JVM invokes main method even before the instantiation of the class. As non-static members or methods cannot be called with the class name directly so main() method should be declared as static. Java interview questions on main method Can we overload main() method in java? Can we declare main() method as private or protected or … Read more

No, JVM invokes main method even before the instantiation of the class. As non-static members or methods cannot be called with the class name directly so main() method should be declared as static. Example public class Main { public void main(String[] args) { System.out.println("Non static main method."); } }public class Main { public void main(String[] … Read more

No, we declare main() method as private or protected or with no access modifier because if we declare so, main() will not be accessible to JVM. Class will compile successfully but will get run time error as no main method found. Example: public class Main { protected static void main(String[] args) { System.out.println("Protected main method."); … Read more

Yes, we can overload main() method. A Java class can have any number of main() methods. But it should have one main() method with signature as “public static void main(String[] args)” to run. If not class will compile but not run. Example /** * This class is used for main method overloading. * @author w3schools … Read more

Yes, save your java file by .java then compile it by javac .java and run by java yourclassname class Test { public static void main(String args[]) { System.out.println("Hello World"); } } class Test { public static void main(String args[]) { System.out.println("Hello World"); } } to compile: javac .java to execute: java Test

ClassLoader in Java is a class that is used to load class files in Java. Java code is compiled into the class file by javac compiler and JVM executes Java program, by executing byte codes written in the class file. ClassLoader is responsible for loading class files from file system, network or any other source. … Read more

To call the main method present in Java code, the JVM(Java Virtual Machine) is used which is a part of the JRE(Java Runtime Environment) and acts as a run-time engine to run Java applications. Because of JVM, a Java code can be developed on one system and can be expected to run on any other … Read more

The super base class of all the Java classes is the java.lang.Object class. In Java, each Java descends from the Object. An axiom in mathematics is the starting point of reasoning. An axiom can be used to logically derive the other statements. The concept of Object being a Superclass in Java can be understood from … Read more

A language that supports or has features to treat everything inside the program as objects can be called a Purely Object-Oriented Language, Fully Object-Oriented Language or Completely Object-Oriented Language. The primitive data types like int, char, float, bool, etc must not be supported by a Purely Object-Oriented Language. For a programming language to be pure … Read more