Core Java Programming Tests

A source file allows containing how many classes?

A source file allows containing how many public classes?

Responsibilities of a Java Compiler are

Which file is compiled ?

Which file is executed?

Who is responsible for execution process of java application/program?

Is it possible to compile multiple java files at a time?
c:/> javac file1.java file2.java

Is it possible to compile multiple .class file at a time?

Whether a source file allows to create multiple Main Class(having main method) or not?

What is the default package in java?

The Java interpreter is used for the execution of the source code.

On successful Compilation a file with the class extension is created.

The Java Source code can be created in a Notepad editor.

Java program is enclosed in a class definition.

Which of these is data type long literal?

Which of these can be returned by the operator & ?

Long Literals in java must be preceded by which of these?

Literal can be of which of these data types?

Which of these can not be used for a variable name in Java?

What is the output of this program?
class evaluate {
public static void main(String args[])
{
int a[] = {1,2,3,4,5};
int d[] = a;
int sum = 0;
for (int j = 0; j < 3; ++j) sum += (a[j] * d[j + 1]) + (a[j + 1] * d[j]); System.out.println(sum); } }

What is the output of this program?
class array_output {
public static void main(String args[])
{
int array_variable [] = new int[10];
for (int i = 0; i < 10; ++i) { array_variable[i] = i/2; array_variable[i]++; System.out.print(array_variable[i] + " "); i++; } } }

What is the output of this program?
class variable_scope {
public static void main(String args[])
{
int x;
x = 5;
{
int y = 6;
System.out.print(x + ” ” + y);
}
System.out.println(x + ” ” + y);
}
}