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

}

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

}

}

Comments

Post a Comment

Popular posts from this blog

Product calculation

 import java.text.DecimalFormat; // Product excluding tax class class ProductExcludingTax {     private String productName;     private int quantity;     private double price;     private double taxRate; // Tax rate as a decimal (e.g., 0.1 for 10% tax)     // Constructor     public ProductExcludingTax(String productName, int quantity, double price, double taxRate) {         this.productName = productName;         this.quantity = quantity;         this.price = price;         this.taxRate = taxRate;     }     // Calculate total amount including tax     public double calculateTotalAmount() {         double totalAmount = quantity * price;         double taxAmount = totalAmount * taxRate;         return totalAmount + taxAmount;     }     // ...
Read more

File operations

 import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; import java.util.Scanner; public class FileOperations {          public static void main(String[] args) {         Scanner scanner = new Scanner(System.in);         int choice;                  do {             System.out.println("\nFile Operations Menu:");             System.out.println("1. Create a File");             System.out.println("2. Update a File");             System.out.println("3. Delete a File");             System.out.println("4. Exit");             System.out.print("Enter your choice: ");             choice = scanner.nextI...
Read more