Java program

                                   Quiz Program 

import java.lang.*;

import java.io.*;

class Questions

{

public String [][]qpa; public String[][]qca; 

Questions()throws IOException

{

qpa=new String[10][5];

/*questionsandobjectives*/

DataInputStream in=new DataInputStream(System.in);

qpa[0][0]="How do you reverse a string in Java?"; 

qpa[0][1]="1.Using StringBuilder";

qpa[0][2]="2.Using StringBuffer"; 

qpa[0][3]="3.Using char array";

qpa[0][4]="4.Using recursion";

qpa[1][0]="How do you swap two numbers without using a third variable in Java?"; 

qpa[1][1]="1.Using Arithmetic Operators";

qpa[1][2]="2.Using Bitwise XOR Operator"; 

qpa[1][3]="3.Using Multiplication and Division";

qpa[1][4]="4.Using Addition and Subtraction";

qpa[2][0]="Which of the following option leads to the portability and security of Java?"; 

qpa[2][1]="1.Bytecode is executed by JVM";

qpa[2][2]="2.The applet makes the Java code secure and portable";

qpa[2][3]="3.Use of exception handling";

qpa[2][4]="4.Dynamic binding between objects";

qpa[3][0]="Which of the following is not a Java features?"; 

qpa[3][1]="1.Dynamic";

qpa[3][2]="2.Architecture Neutral";

qpa[3][3]="3.Use of pointers";

qpa[3][4]="4.Object-oriented";

qpa[4][0]="The \u0021 article referred to as a?"; 

qpa[4][1]="1.Unicode escape sequence";

qpa[4][2]="2.Octal escape";

qpa[4][3]="3.Hexadecimal";

qpa[4][4]="4.Line feed";

qpa[5][0]="_____ is used to find and fix bugs in the Java programs?"; 

qpa[5][1]="1.JVM";

qpa[5][2]="2.JRE";

qpa[5][3]="3.JDK";

qpa[5][4]="4.JDB";

qpa[6][0]="Which of the following creates a List of 3 visible items and multiple selections abled?"; 

qpa[6][1]="1.new List(false, 3)";

qpa[6][2]="2.new List(3, true)";

qpa[6][3]="3.new List(true, 3)";

qpa[6][4]="4.new List(3, false)";

qpa[7][0]="What is the return type of the hashCode() method in the Object class?"; 

qpa[7][1]="1.Object";

qpa[7][2]="2.int";

qpa[7][3]="3.long";

qpa[7][4]="4.void";

qpa[8][0]="Which of the following is a valid long literal?"; 

qpa[8][1]="1.ABH8097";

qpa[8][2]="2.L990023";

qpa[8][3]="3.904423";

qpa[8][4]="4.0xnf029L";

qpa[9][0]="Which of the following tool is used to generate API documentation in HTML format from doc comments in source code?"; 

qpa[9][1]="1.javap tool";

qpa[9][2]="2.javaw command";

qpa[9][3]="3.Javadoc tool";

qpa[9][4]="4.javah command";

qca=new String[10][2];

/*questionsandcorrectanswers*/

qca[0][0]="How do you reverse a string in Java?";

qca[0][1]="1.Using StringBuilder";

qca[1][0]="How do you swap two numbers without using a third variable in Java?";

qca[1][1]="2.Using Bitwise XOR Operator";

qca[2][0]="Which of the following option leads to the portability and security of Javad?"; 

qca[2][1]="1.Bytecode is executed by JVM";

qca[3][0]="Which of the following is not a Java features?"; 

qca[3][1]="3.Use of pointers";

qca[4][0]="The \u0021 article referred to as a?"; 

qca[4][1]="1.Unicode escape sequence";

qca[5][0]="_____ is used to find and fix bugs in the Java programs?"; 

qca[5][1]="4.JDB";

qca[6][0]=" Which of the following creates a List of 3 visible items and multiple selections abled?"; 

qca[6][1]="2.new List(3, true)";

qca[7][0]="What is the return type of the hashCode() method in the Object class?"; 

qca[7][1]="2.int";

qca[8][0]="Which of the following is a valid long literal?"; 

qca[8][1]="2.L990023";

qca[9][0]="Which of the following tool is used to generate API documentation in HTML format from doc comments in source code?"; 

qca[9][1]="3.Javadoc tool";

}

}

public class qu

{

public static void main(String[]args)throws IOException

{ 

DataInputStream in=new DataInputStream(System.in);

int x,correct=0,wrong=0,i,j; 

String ans[]=new String[10];

Questions q=new Questions(); System.out.println("JAVA QUIZ");

System.out.println(" ");

/*forlooptodisplayquestionandreadtheanswerfromtheuser*/

for(i=0;i<10;i++)

{

for(j=0;j<5;j++)

{

System.out.println(q.qpa[i][j]);

}

System.out.println("youranswer:");

 

x=Integer.parseInt(in.readLine());

ans[i]=q.qpa[i][x];

}

/*calculatecorrectanswers*/

for(i=0;i<10;i++)

{

if(q.qca[i][1].equals(ans[i]))correct++;

 else

wrong++;

}

 

/*printingthecorrectanswersanduserselectedanswers*/ 

System.out.println("CORRECT ANSWERS");

for(i=0;i<10;i++)

{

System.out.println(); System.out.println(q.qpa[i][0]);

System.out.println("correctanswer:"+q.qca[i][1]);

System.out.println("youranswer:"+ans[i]);

}

System.out.println("Correct="+correct+"\twrong="+wrong);

}

}

Output: