Java program

                First program 

import java.lang.*;

import java.io.*;

class Questions

{

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

Questions()throws IOException

{

qpa=new String[10][5];

DataInputStream in=new DataInputStream(System.in);

qpa[0][0]="Which Java statement is used to print output to the screen?";

qpa[0][1]="1.System.Out.Println()";

qpa[0][2]="2.Console.WriteLine()";

qpa[0][3]="3.Print statement()";

qpa[0][4]="4.Output println()";

qpa[1][0]="What is the data type of the variable int x = 10?";

qpa[1][1]="1.Float";

qpa[1][2]="2.Integer"; 

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

qpa[1][4]="4.Double";

qpa[2][0]="Which Java keyword is used to define a class?"; 

qpa[2][1]="1.Class";

qpa[2][2]="2.Public";

qpa[2][3]="3.Void";

qpa[2][4]="4.Static";

qpa[3][0]="Which Java operator is used for bitwise AND operation?"; 

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

qpa[3][2]="2.~";

qpa[3][3]="3.|";

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

qpa[4][0]="Which of the following Java operators is used for assignment?"; 

qpa[4][1]="1.+";

qpa[4][2]="2.-";

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

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

qpa[5][0]="What is the purpose of the break statement in java ?"; 

qpa[5][1]="1.To exit a loop";

qpa[5][2]="2.To exit a switch statement";

qpa[5][3]="3.To exit a method";

qpa[5][4]="4.To exit the program";

qpa[6][0]="Which Java keyword is used to create a thread?"; 

qpa[6][1]="1.Runnable";

qpa[6][2]="2.Thread";

qpa[6][3]="3.Implements";

qpa[6][4]="4.Extends";

qca=new String[10][2];

qca[0][0]="Which Java statement is used to print output to the screen?";

qca[0][1]="1.System.out.println";

qca[1][0]="What is the data type of the variable int x = 10? ";

qca[1][1]="2.Integer";

qca[2][0]="Which Java keyword is used to define a class?"; 

qca[2][1]="1.Class";

qca[3][0]="Which Java operator is used for bitwise AND operation?"; 

qca[3][1]="1.&";

qca[4][0]="Which of the following Java operators is used for assignment?"; 

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

qca[5][0]="What is the purpose of the break statement in java?"; 

qca[5][1]="2.To exit a switch statement";

qca[6][0]="Which Java keyword is used to create a thread?"; 

qca[6][1]="1.Runnable";

}

}

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(" ");

for(i=0;i<7;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];

}

for(i=0;i<7;i++)

{

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

 else

wrong++;

}

 

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

for(i=0;i<7;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:

Which Java statement is used to print output to the screen?

1.System.Out.Println()

2.Console.WriteLine()

3.Print statement()

4.Output println()

youranswer:

1

What is the data type of the variable int x = 10?

1.Float

2.Integer

3.String

4.Double

youranswer:

2

Which Java keyword is used to define a class?

1.Class

2.Public

3.Void

4.Static

youranswer:

1

Which Java operator is used for bitwise AND operation?

1.&

2.~

3.|

4.^

youranswer:

1

Which of the following Java operators is used for assignment?

1.+

2.-

3.==

4.=

youranswer:

4

What is the purpose of the break statement in java ?

1.To exit a loop

2.To exit a switch statement

3.To exit a method

4.To exit the program

youranswer:

2

Which Java keyword is used to create a thread?

1.Runnable

2.Thread

3.Implements

4.Extends

youranswer:

1

CORRECT ANSWERS

Which Java statement is used to print output to the screen?

correctanswer:1.System.out.println

youranswer:1.System.Out.Println()

What is the data type of the variable int x = 10?

correctanswer:2.Integer

youranswer:2.Integer

Which Java keyword is used to define a class?

correctanswer:1.Class

youranswer:1.Class

Which Java operator is used for bitwise AND operation?

correctanswer:1.&

youranswer:1.&

Which of the following Java operators is used for assignment?

correctanswer:4.=

youranswer:4.=

What is the purpose of the break statement in java ?

correctanswer:2.To exit a switch statement

youranswer:2.To exit a switch statement

Which Java keyword is used to create a thread?

correctanswer:1.Runnable

youranswer:1.Runnable

Correct=7 wrong=0