Java static

main(): It is a default signature which is predefined in the JVM . It is called by JVM to execute a program line by line and end the execution after completion of this method.

The predefined core objects are Array , Boolean , Date , Function , Math , Number , RegExp , and String .

Predefined Classes in Java. The library of predefined class in Java is called Java class library or application programming interface (API) . In Java, classes are organized into groups called packages. Each package has a specific name such as java.