Can a public class MyClass be defined in a source file named YourClass.java?

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No the source file name, if it contains a public class, must be the same as the public class name itself with a .java extension.

2013-07-02, 3026👍, 0💬

What will be the output of the following statement? System.out.println ("1" + 3);
What will be the output of the following statement? System.out.println ("1" + 3); It will print 13. 2013-07-03, 3262👍, 0💬

Can a public class MyClass be defined in a source file named YourClass.java?
Can a public class MyClass be defined in a source file named YourClass.java? No the source file name, if it contains a public class, must be the same as the public class name itself with a .java extension. 2013-07-02, 3027👍, 0💬

Can main method be declared final?
Can main method be declared final? Yes, the main method can be declared final, in addition to being public static. 2013-07-02, 2618👍, 0💬

What will be the default values of all the elements of an array defined as an instance variable?
What will be the default values of all the elements of an array defined as an instance variable? If the array is an array of primitive types, then all the elements of the array will be initialized to the default value corresponding to that primitive type. e.g. All the elements of an array of int wil... 2013-07-03, 2585👍, 0💬

What will be the initial value of an object reference which is defined as an instance variable?
What will be the initial value of an object reference which is defined as an instance variable? The object references are all initialized to null in Java. However in order to do anything useful with these references, you must set them to a valid object, else you will get NullPointerExceptions everyw... 2013-06-28, 2553👍, 0💬

What is the default value of the local variables?
What is the default value of the local variables? The local variables are not initialized to any default value, neither primitives nor object references. If you try to use these variables without initializing them explicitly, the java compiler will not compile the code. It will complain abt the loca... 2013-07-01, 2415👍, 0💬

What are the different scopes for Java variables?
What are the different scopes for Java variables? The scope of a Java variable is determined by the context in which the variable is declared. Thus a java variable can have one of the three scopes at any given point in time. 1. Instance : - These are typical object level variables, they are initiali... 2013-06-28, 2350👍, 0💬

What happens if you dont initialize an instance variable of any of the primitive types in Java?
What happens if you dont initialize an instance variable of any of the primitive types in Java? Java by default initializes it to the default value for that primitive type. Thus an int will be initialized to 0, a boolean will be initialized to false. 2013-06-27, 2190👍, 0💬

What is a JSP and what is it used for?
What is a JSP and what is it used for? Java Server Pages (JSP) is a platform independent presentation layer technology that comes with SUN s J2EE platform. JSPs are normal HTML pages with Java code pieces embedded in them. JSP pages are saved to *.jsp files. A JSP compiler is used in the background ... 2013-07-04, 2048👍, 0💬

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