JAVA 2018 Old Paper Solutions

3rd Semester

 Year 2018

Q.no 11

import java.util.Scanner;
public class matrix {
    public static void main(String args[]){
        int i,j = 0,s=0;
        int a[][]=new int[2][3];
        Scanner sc=new Scanner(System.in);
        System.out.println("enter the elements in matrix");
        for(i=0;i<2;i++){
            for(j=0;j<3;j++){
                a[i][j]=sc.nextInt();
                s=s+a[i][j];
            }
        }
        System.out.println("sum="+s);
    }
}




Q.no 13

import java.util.*;
import java.lang.*;
abstract class Y2018q13 {
    abstract void putdata(String b, int a, int c);
    abstract void getdata();
}
class Airplane extends Y2018q13 {
    int code;
    String name;
    int capacity;
    void putdata(String b, int a, int c) {
        code = a;
        name = b;
        capacity = c;
    }
    void getdata() {
        System.out.println("code=" + code + " name=" + name + " Capacity=" + capacity);
    }
}
class Apply {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        Airplane ab = new Airplane();
        System.out.println("Enter name  code and capacity");
        ab.putdata(sc.nextLine(), sc.nextInt(), sc.nextInt());
        ab.getdata();
    }
}

Q.no 14






import java.util.Scanner;
/**
 *
 * @author bim study notes
 */
 class y2018q14 {
    public static void main(String args[]){
        System.out.println("Enter the size of array");
        int a=new Scanner(System.in).nextInt();
        String s[]=new String[a];
        System.out.println("Enter "+a+" String");
        for(int i=0;i<a;i++){
            s[i]=new Scanner(System.in).next();
        }
        for(int i=0;i<a;i++){
            s[i]=s[i].replace('i', '!');
        }
         System.out.println("After replace\n\n");
        for(int i=0;i<a;i++){
           System.out.println(s[i]);
        }
    }
}

Q.no 15

import java.io.*;
import java.util.*;
/** * * @author bim study notes */
public class y2018q15 {
    public static void main(String args[]) {
        try {
            String add, name, clz;
            int i;
            File f = new File("c:\\myjava");
            if (!f.exists()) {
                f.mkdir();
            }
            File f1 = new File(f, "student.txt");
            FileWriter f2 = new FileWriter(f1);
            System.out.println("name address clz");
            name = new Scanner(System.in).next();
            add = new Scanner(System.in).next();
            clz = new Scanner(System.in).next();
            f2.write(" Name=" + name + " add=" + add + " clz=" + clz);
            System.out.println();
            f2.flush();
            File f3 = new File(f, "pupil.txt");
            FileReader f4 = new FileReader(f1);
            FileWriter f5 = new FileWriter(f3);
            int c;
            {
                while ((c = f4.read()) != -1) {
                    f5.write((char) c);
                }
            }
            f5.flush();
            FileReader f6 = new FileReader(f3);
            while ((c = f6.read()) != -1) {
                System.out.print((char) c);
            }
        } catch (Exception e) {
			System.out.println(e);
        }
    }
}

Q.no 17

package t3rdsem;
/** * * @author bim study notes */
 class A1 {
    void msg()
    {
        System.out.print("a");
    }
    class B{
        void msg()
        {
            System.out.print("b");
        }
        class C extends A1
                {
                public ststic void main(String args[])
                {
                    C obj=new C();
                    obj.msg;
                }
    }
        }
    }
    }

 

Leave a Reply

Your email address will not be published.