Team Analytics

 

Slip 30 A) Write a java program to accept a number from a user, if it is zero then throw user defined Exception “Number is Zero”. If it is non-numeric then generate an error “Number is Invalid” otherwise check whether it is palindrome or not.

Answer :

import java.io.*;

class Numberiszero extends Exception{}

class Slip30A{

    public static void main( String args[]){

        int r,sum=0,temp; 

        int n;

        DataInputStream dr = new DataInputStream(System.in);

        try {

            System.out.print("Enter Number : ");

            n = Integer.parseInt(dr.readLine());

            if(n==0){

                throw new Numberiszero();

            }else{

                temp=n; 

                while(n>0){ 

                    r=n%10;

                    sum=(sum*10)+r; 

                    n=n/10; 

                } 

                if(temp==sum){

                    System.out.println("Palindrome Number "); 

                }else{

                    System.out.println("Not Palindrome");

                }

            }

        } catch (Numberiszero nz) {

            System.out.println("Number is Zero");

        }

        catch (NumberFormatException e){

            System.out.println("Number is Invalid");

        }

        catch (Exception e){}

    }

}

Output :

 

Slip 30 B) Write a java program to design a following GUI (Use Swing).

Answer :

import javax.swing.*;

import java.awt.*;

class Slip30B extends JFrame{

    JLabel l1,l2,l3,l4,l5,l6;

    JTextField t1,t2,t3,t4;

    JButton b1,b2;

    JRadioButton rb1, rb2;

    JCheckBox ch1,ch2,ch3;

    Panel p1,p2,p3,p4,p5,p6;

    GridLayout g1,g2,g3,g4,g5,g6,g7;

    JFrame jf;

    public Slip30B(){

        jf = new JFrame();

        l1 = new JLabel("",JLabel.CENTER);

        l1.setText("<HTML><U>Personal Information</U></HTML>");

        p1 = new Panel();

        g1 = new GridLayout(1,1);

        p1.setLayout(g1);

        p1.add(l1);

        l1.setFont( new Font("Times New Roman",Font.BOLD,20));

        l2 = new JLabel(" First Name : ");

        t1 = new JTextField(30);

        l3 = new JLabel(" Last Name : ");

        t2 = new JTextField(30);

        p2 = new Panel();

        g2 = new GridLayout(2,1);

        p2.setLayout(g2);

        p2.add(l2);

        p2.add(t1);

        p2.add(l3);

        p2.add(t2);

        l4 = new JLabel(" Address : ");

        t3 = new JTextField(30);

        l5 = new JLabel(" Mobile Number : ");

        t4 = new JTextField(30);

        p3 = new Panel();

        g3 = new GridLayout(2,1);

        p3.setLayout(g3);

        p3.add(l4);

        p3.add(t3);

        p3.add(l5);

        p3.add(t4);

        l5 = new JLabel(" Gender ");

        rb1 = new JRadioButton("Male");

        rb2 = new JRadioButton("Female");

        ButtonGroup bg = new ButtonGroup();

        bg.add(rb1);

        bg.add(rb2);

        p4 = new Panel();

        g4 = new GridLayout(1,2);

        p4.setLayout(g4);

        p4.add(l5);

        p4.add(rb1);

        p4.add(rb2);

        l6 = new JLabel(" Your Interests");

        ch1 =  new JCheckBox("Comuter");

        ch2 =  new JCheckBox("Sport");

        ch3 =  new JCheckBox("Music");

        p5 = new Panel();

        g5 = new GridLayout(1,2);

        p5.setLayout(g5);

        p5.add(l6);

        p5.add(ch1);

        p5.add(ch2);

        p5.add(ch3);

       

        b1 = new JButton("Submit");

        b2 = new JButton("Reset");

        p6 = new Panel();

        g6 = new GridLayout(1,1,400,10);

        p6.add(b1);

        p6.add(b2);

        this.setSize(500,250);

        this.setVisible(true);

        g7 = new GridLayout(6,1);

        this.setLayout(g7);

        this.add(p1);

        this.add(p2);

        this.add(p3);

        this.add(p4);

        this.add(p5);

        this.add(p6);

    }

    public static void main(String args[]){

        new Slip30B();

    }

}

Output :

 

 

Slip 29 A) Write a java program to check whether given candidate is eligible for voting or not. Handle user defined as well as system defined Exception.

Answer :

import java.io.*;

class NumOutRange extends Exception{}

class Slip29A{

    static int n;

    public static void main( String args[]){

        DataInputStream dr = new DataInputStream(System.in);

        try {

            System.out.print("Enter Age : ");

            n = Integer.parseInt(dr.readLine());

            if(n<18){

                throw new NumOutRange();

            }else{

                System.out.print("You Are eligible For Voting :) ");

            }

        } catch (NumOutRange nz) {

            System.out.println("You Are Not eligible For Voting ....!");

        }

        catch (Exception e){}

    }

}

Output :

Slip 29 B) Write a java program using Applet for bouncing ball. Ball should change its color for each bounce.

Answer :

import java.applet.*;

import java.awt.*;

public class Slip29B extends Applet implements Runnable {

    Thread t = null;

    int x1 = 10;

    int y1 = 300;

    int flagx1, flagy1;

    int R, G, B;

    public void start() {

        t = new Thread(this);

        t.start();

    }

    public void color(){

        R = (int) (Math.random() * 256);

        G = (int) (Math.random() * 256);

        B = (int) (Math.random() * 256);

    }

    public void run() {

        for (;;) {

            try {

                repaint();

                if (y1 <= 50) {

                    flagx1 = 0;

                    color();

                } else if (y1 >= 300) {

                    flagx1 = 1;

                    color();

                }

                if (x1 <= 10) {

                    flagy1 = 0;

                    color();

                } else if (x1 >= 400) {

                    flagy1 = 1;

                    color();

                }

                Thread.sleep(10);

            } catch (InterruptedException e) {

            }

        }

    }

    public void paint(Graphics g) {

        Color color = new Color(R, G, B);

        g.setColor(color);

        g.fillOval(x1, y1, 20, 20);

        if (flagx1 == 1)

            y1 -= 2;

        else if (flagx1 == 0)

            y1 += 2;

        if (flagy1 == 0)

            x1 += 4;

        else if (flagy1 == 1)

            x1 -= 4;

    }

}

/*

 * <applet code="Slip29B.class" width="420" height="320">

 * </applet>

 */

Output :

 

Slip 28 A) Write a java program to count the number of integers from a given list. (Use Command line arguments).

Answer :

import java.util.*;

public class Slip28A {

    public static void main(String[] args) {

        int count = 0;

        List<String> al = new ArrayList<>();

        for (int i = 0; i < args.length; i++) {

            al.add(args[i]);

        }

        for (int i = 0; i < al.size(); i++) {

            String element = al.get(i);

            try {

                int j = Integer.parseInt(element);

                count++;

            } catch (NumberFormatException e) {}

        }

        System.out.println(count + " integers present in list");

    }

}

Output :

 

Slip 28 B) Write a java Program to accept the details of 5 employees (Eno, Ename, Salary) and display it onto the JTable.

Answer :

import javax.swing.*;

public class Slip28B {

    JFrame f;

    JTable j;

    Slip28B(){

        f = new JFrame();

        f.setTitle("Employee Details");

        String data[][] = {

            {"1","Radhika Sapkal","50,000"},

            {"2","Ramesh Devakar","20,000"},

            {"3","Hardik Shrinivas","25,000"},

            {"4","Bhihari Kumar","20,000"},

            {"5","Swaraghini Pawar","15,000"},

        };

        String[] columnNames = {"Eno", "Ename", "Salary" };

        j = new JTable(data, columnNames);

        j.setBounds(30,40,200,300);

        JScrollPane sp = new JScrollPane(j);

        f.add(sp);

        f.setSize(500,200);

        f.setVisible(true);

    }

 

    public static void main(String args[]) {

        new Slip28B();

    }

}

Output :

 

Slip 27 A) Write a java program to accept a number from user, If it is greater than 1000 then throw user defined exception “Number is out of Range” otherwise display the factors of that number. (Use static keyword)

Answer :

import java.io.*;

class NumOutRange extends Exception{}

class Slip27A{

    static int n;

    public static void main( String args[]){

        DataInputStream dr = new DataInputStream(System.in);

        try {

            System.out.print("Enter Number : ");

            n = Integer.parseInt(dr.readLine());

            if(n>1000){

                throw new NumOutRange();

            }else{

                for(int i=1; i<n; i++){

                    if(n%i==0){

                        System.out.println(i + " ");

                    }

                }

            }

        } catch (NumOutRange nz) {

            System.out.println("Num is out of range..!");

        }

        catch (Exception e){

            System.out.println(""+e.getMessage());

        }

    }

}

Output :

Slip 27 B) Write a java program to accept directory name in TextField and display list of files and subdirectories in List Control from that directory by clicking on Button.

Answer :

import java.awt.*;

import java.awt.event.*;

import java.io.*;

 

public class Slip27B extends Frame implements ActionListener{

    Graphics g;

    List l;

    TextField t1;

    Button b1;

    Label l1;

   

    public Slip27B(){

        this.setLayout(new FlowLayout());

        this.setSize(400,400);

        this.setVisible(true);

        l1 = new Label("Enter Directory ");

        t1 = new TextField(20);

        l = new List(10);

        b1 = new Button("Display");

        l1.setBounds(50,100,80,80);

        t1.setBounds(50,150,80,80);

        b1.setBounds(50,200,80,80);

        l.setBounds(50,300,100,100);

        add(l1);

        add(t1);

        add(b1);

        add(l);

        b1.addActionListener(this);

    }

 

    public void actionPerformed(ActionEvent e){

        if(e.getSource()==b1){

            try{

                String nm = t1.getText();

                File f1 = new File(nm + ":");

                String s1[]=f1.list();

                if(s1==null){

                    System.out.println("Dir not exist");

                }else{

                    for(int i=0; i<s1.length; i++){

                        l.add(s1[i]);

                    }

                }

            }catch(Exception ee){}

        }

    }

    public static void main(String args[]){

        new Slip27B();

    }

}

Output :

 

Slip 26 A) Write a java program to display ASCII values of the characters from a file.

Answer :

import java.io.*;

class Slip26A{

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

        char ch;

        FileReader fr = new FileReader("a.txt");

        int c;

        while ((c=fr.read())!=-1){

            ch=(char)c;

            if(Character.isDigit(ch)==false && (Character.isSpaceChar(c)==false)){

                System.out.println("ASCII "+ch+" : "+ c);

            }

        }

        fr.close();

    }

}

Output :

Slip 26 B) Write a java program using applet to draw Temple.

Answer :

import java.applet.Applet;

import java.awt.Color;

import java.awt.Graphics;

public class Slip26B extends Applet{

 

    public void init() {

        setBackground(Color.BLACK);

    }

public void paint(Graphics g){

    g.setColor(Color.WHITE);

    g.drawRect(100, 150, 90, 120);

    g.drawRect(130, 230, 20, 40);

    g.drawLine(150, 100, 100, 150);

    g.drawLine(150, 100, 190, 150);

    g.drawLine(150, 50, 150, 100);

    g.setColor(Color.ORANGE);

    g.drawRect(150, 50, 20, 20);

}

 

}

/*

<applet code="Slip26B.class" width="300" height="300">

</applet>

*/

Output :