Quiz on Java Syntax

Which of the following is correct syntax for a class name?

What is the output of the program?

 public class sample{

     public static void main(String args [] )

     {

     final int a = 2;

     a = 5;

     system .out.println(a);

    }

    }

 Public class demo {

Public static void main(String args [] )

{

String Firstname = “Data”;

String Lastname = “Flair”;

system.out.println(*********);

}

}

While creating an object the syntax should include ?

How to declare a Scanner class named sc?

import java.util.*;  

class UserInputDemo1  

{  

public static void main(String[] args)  

{  

_______________________________ 

System.out.print(“Enter a string: “);  

String str= sc.nextLine();             

System.out.print(“Entered string is: “+str);             

}  

}  

Whenever a method is invoked the parameters and other variables are stored in which area of memory location?

Access Modifiers which cannot be used  for constructors are ?

Which method is used for Garbage collection?

How to declare and call a method?

What will be the output of the program?

public class Example {  

    public static void main(String[] args) {  

        StringBuffer name = new StringBuffer(“DetaFoair”);  

        s1.setCharAt(1,’a’);  

        s1.setCharAt(6,’l’);  

        System.out.println(name);  

     }  

 }  

What is the name of the concept which uses a pre-compiled code for further executions ?

What will be the output of the program?

 public class Student {

    private String name;

    private String college;

    public Student(String name, String college) {

        super();

        this.name = name;

        this.college = college;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getCollege() {

        return college;

    }

    public void setCollege(String college) {

        this.college = college;

    }

    public static void main(String[] args) {

        Student student = new Student(“karthick”, “Skasc”);

        Student student2 = new Student(“Jerome”, “Nasc”);

        Student student3 = new Student(“Kamrizdeen”, “Kcas”);

    }

}

 What is the main advantage in using Methods in Java ?

Which Object is used for creation only with no reference ?

The given program is an example of which class?

. final class A  

{  

void printmsg()   

{  

System.out.print(“Base class method is executed.”);  

}  

}     

class B extends A  

{   

void printmsg()   

{  

System.out.print(“Derived class method is executed.”);  

}  

}  

public class ClassExample  

{  

public static void main(String[] arg)   

{  

B obj = new B();  

obj.printmsg();  

}  

}