2nd 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]="keyboard?"; qpa[0][1]="1.input";

qpa[0][2]="2.java JavaProgram"; qpa[0][3]="3.javac JavaProgram.java";qpa[0][4]="4.No one";

qpa[1][0]="What is the use ofthe println method?"; qpa[1][1]="1.Itisusedtoprinttextonthescreen.";

qpa[1][2]="2.Itisusedtoprinttextonthescreenwiththelinebreak."; qpa[1][3]="3.Itisusedtoreadtextfromkeyboard.";

qpa[1][4]="4.Itisusedtoread textfromafile.";

qpa[2][0]="Howtoreadacharacterfromthekeyboard?"; qpa[2][1]="1.char c=System.read()";

qpa[2][2]="2.char c=System.in.read()";

qpa[2][3]="3.char c=(char)System.read()";

qpa[2][4]="4.char c=(char)System.in.read()";

qpa[3][0]="Whichoneisasingle-linecomment?"; qpa[3][1]="1./...";

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

qpa[3][3]="3./*...";

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

qca=new String[10][2];

/*questionsandcorrectanswers*/

qca[0][0]="keyboard?";

 qca[0][1]="1.input";

qca[1][0]="Whatistheuseoftheprintlnmethod?";

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

qca[2][0]="Howtoreadacharacterfromthekeyboard?"; 

qca[2][1]="4.char c=(char)System.in.read()";

qca[3][0]="Whichoneisasingle-linecomment?"; 

qca[3][1]="2.//...";

}

}

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<4;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<4;i++){

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

 else

wrong++;

}

 

/*printingthecorrectanswersanduserselectedanswers*/ 

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

for(i=0;i<4;i++){

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

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

}

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

}

}