OOP Programming Technique And Data & Variable

Assume that you have create and save some Java code in the text editor, choose the correct order to compile and run Java using command prompt.

I. set path

II. type the java command

III. type the javac command

• I,II,III

• III,II,I

• I,III,II

• II,I,III

Choose the syntax of a class named Student with variable named studentName

• class Student

  {

  char studentName;

  }

• class Student

  {

  int studentName;

  }

• class Student

  {

  studentName;

  }

• class Student

  {

  String studentName;

  }

Define terminologies used to describe the data component in UML class diagram

• Method

• Attribute

• Class

• Object

Determine the output of the program below

class q2{

public static void main(String args[]){

System.out.println("I love Java!");

System.out.println("I love Java.");

}

}

• I love Java.

  I love Java!

• I love Java. I love Java!

• I love Java!

  I love Java.

• I love Java! I love Java.

Determine the output of the program below

class q1{

public static void main(String args[]){

System.out.print("I love Java!");

System.out.println("I love Java.");

}

}

• I love Java.

  I love Java!

• I love Java. I love Java!

• I love Java!

  I love Java.

• I love Java! I love Java

Choose the right statement about Java Data types.

• Integer data types are short, int and long

• The character data type is char.

• Real number data types are float and double

  
  

• All the above

Which is the data type that is not recommended for numeric applications in Java?

• int

• double

• byte

• float

8.

Define a data type in Java

• The place where data is stored

• The type or variety of data being handled for reading and writing

• The technique how data is retreived

• The fixed value

In Java applications, which method is mandatory?

• Print method

• Display method

• Show method

• Main method

Identify Java command used to compile a java program from Command Line or Command Prompt

• java hello.java

• javac hello.java

• javac hello

• hello.java