PART A. input as command line argument. 1. Write a program to find factorial of list of number reading

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Egbert McGee
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1 PART A 1. Write a program to find factorial of list of number reading input as command line argument class factorial public static void main(string args[]) int[]arr=new int[10]; int fact; if(args.length==0) System.out.println("No command line argument"); return; for(int i=0;i<args.length;i++) arr[i]=integer.parseint(args[i]); for(int i=0;i<args.length;i++) fact=1; while(arr[i]>0) fact=fact*arr[i]; arr[i]--; System.out.println("The factorial of"+args[i]+"is:"+fact);

2 2. Write a program to display all prime numbers between two limits class Prime public static void main(string args[]) if(args.length==0) System.out.println("No command line arguments"); return; int num1, num2, i, j, n; num1 = Integer.parseInt(args[0]); num2 = Integer.parseInt(args[1]); System.out.println("Prime numbers between "+num1+" and "+num2+" are"); for(i=num1; i<num2; i++) for(j=2; j<i; j++) n=i%j; if(n==0) break; if(i==j) System.out.println(i);

3 3. Write a program to sort list of elements in ascending and descending order and show the exception handling class Sorting public static void main(string args[]) int a[]=new int[5]; try for(int i=0;i<5;i++) a[i]=integer.parseint(args[i]); System.out.println("\nBefore Sorting\n"); for(int i=0;i<5;i++) System.out.print(" "+a[i]); bubblesort(a,5); System.out.println("\n\nAfter Sorting\n"); System.out.println("Ascending order\n"); for(int i=0;i<5;i++) System.out.print(" "+a[i]); System.out.println("\n\nDescending order\n"); for(int i=4;i>=0;i--) System.out.print(" "+a[i]); catch(numberformatexception e) System.out.println("Enter only Integer"); catch(arrayindexoutofboundsexception e) System.out.println("Enter only 5 integer"); public static void bubblesort(int[] arr,int length)

4 int temp,i,j; for(i=0;i<length-1;i++) for(j=0;j<length-1-i;j++) if(arr[j]>arr[j+1]) temp=arr[j]; arr[j]=arr[j+1]; arr[j+1]=temp;

5 4. Write a program to implement all string operations import java.lang.*; class StringOperation public static void main(string[] args) String str1 = "Sudeep"; String str2 = "Naresh"; System.out.println("The String are " +str1 + " and " + str2); int len1 = str1.length(); int len2 = str2.length(); System.out.println("The length of " +str1 + " and " + str2 + " is" +len1 + " and " +len2);system.out.println("concartination of " +str1 + "and" + str2 +" is " + str1.concat(str2)); System.out.println("First Character of" +str1 + " is " + str1.charat(0));system.out.println("the Upper Case of" + str1 +" is " + str1.touppercase()); System.out.println("The Lower Case of" + str2 +" is " + str1.tolowercase()); System.out.println("d occurs at position" + str1.indexof('d') + " in " + str1); System.out.println("The substring of " + str1 +" which starts from index 2 and ends at index 5 is " + str1.substring(2,5)); System.out.println("Repalacing d with D in " + str1 + " is " + str1.repalce('d','d')); boolean check = str1.equals(str2); if (check == false) System.out.println("Both String are different"); else System.out.println("Both String are Same");

7 5. Write a program to find area of geometrical figures using method import java.lang.math.*; import java.io.*; class GeometricalArea public static double circlearea(double r) return Math.PI*r*r; public static double squarearea(double side) return side*side; public static double rectanglearea(double length, double breadth) return length * breadth; public static double trianglearea(double base, double height) return 0.5*base*height; public static String readline() throws IOException String input=""; BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); input = br.readline(); return input; public static void main(string[] args) throws IOException System.out.println("Enter the Radius:"); double radius = Double.parseDouble(readline());

8 System.out.println("Area of Circle:"+circleArea(radius)); System.out.println("Enter the Side:"); double side = Double.parseDouble(readline()); System.out.println("Area of Square:"+squareArea(side)); System.out.println("Enter the Length:"); double length = Double.parseDouble(readline()); System.out.println("Enter the Breadth:"); double breadth = Double.parseDouble(readline()); System.out.println("Area of Rectangle:"+rectangleArea(length, breadth)); System.out.println("Enter the Base:"); double base = Double.parseDouble(readline()); System.out.println("Enter the Height:"); double height = Double.parseDouble(readline()); System.out.println("Area of Triangle:"+triangleArea(base, height));

9 6. Write a program to implement constructor overloading by passing different number of parameter of different types class Cube int length, breadth, height; Cube() length = breadth = height = 2; System.out.println("This is the default Constructor"); Cube(int l, int b) length = l; breadth = b; height = 2; System.out.println("This is the paratemerized constructor with two arguments"); Cube(int l, int b, int h) length = l; breadth = b; height = h; System.out.println("This is the paratemerized constructor with three arguments"); int getvolume() return length*breadth*height; public static void main(string args[]) Cube obj1 = new Cube(); System.out.println("The volume of the cube is"+obj1.getvolume());

10 Cube obj2 = new Cube(10,20); System.out.println("The volume of the cube is"+obj2.getvolume()); Cube obj3 = new Cube(10,20,30); System.out.println("The volume of the cube is"+obj3.getvolume());

11 7. Write a program to create student report using applet, read the input using text boxes and display the o/p using buttons import java.applet.*; import java.awt.*; import java.awt.event.*; /*<applet code="studentreport.class",width=500 height=500> </applet>*/ public class StudentReport extends Applet implements ActionListener Label lbltitle,lblregno,lblcourse,lblsemester,lblsubject1,lblsubject2; TextField txtregno,txtcourse,txtsemester,txtsubject1,txtsubject2; Button cmdreport; String rno="",course="",sem="",sub1="",sub2="",avg="",heading=""; public void init() GridBagLayout gbag=new GridBagLayout(); GridBagConstraints gbc=new GridBagConstraints(); setlayout(gbag); lbltitle=new Label("Enter Student Details"); lblregno=new Label("Register Number"); txtregno=new TextField(25); lblcourse=new Label("Course Name"); txtcourse=new TextField(25); lblsemester=new Label("Semester"); txtsemester=new TextField(25); lblsubject1=new Label("Mark of Subject 1:"); txtsubject1=new TextField(25); lblsubject2=new Label("Mark of Subject 2:"); txtsubject2=new TextField(25); cmdreport=new Button("View Report"); gbc.weighty=1.0; gbc.gridwidth=gridbagconstraints.remainder;

12 gbc.anchor=gridbagconstraints.north; gbag.setconstraints(lbltitle,gbc); gbc.anchor=gridbagconstraints.east; gbc.gridwidth=gridbagconstraints.relative; gbag.setconstraints(lblregno,gbc); gbc.gridwidth=gridbagconstraints.remainder; gbag.setconstraints(txtregno,gbc); gbc.gridwidth=gridbagconstraints.relative; gbag.setconstraints(lblcourse,gbc); gbc.gridwidth=gridbagconstraints.remainder; gbag.setconstraints(txtcourse,gbc); gbc.gridwidth=gridbagconstraints.relative; gbag.setconstraints(lblsemester,gbc); gbc.gridwidth=gridbagconstraints.remainder; gbag.setconstraints(txtsemester,gbc); gbc.gridwidth=gridbagconstraints.relative; gbag.setconstraints(lblsubject1,gbc); gbc.gridwidth=gridbagconstraints.remainder; gbag.setconstraints(txtsubject1,gbc); gbc.gridwidth=gridbagconstraints.relative; gbag.setconstraints(lblsubject2,gbc); gbc.gridwidth=gridbagconstraints.remainder; gbag.setconstraints(txtsubject2,gbc); gbc.anchor=gridbagconstraints.center; gbag.setconstraints(cmdreport,gbc); add(lbltitle); add(lblregno); add(txtregno); add(lblcourse); add(txtcourse); add(lblsemester); add(txtsemester); add(lblsubject1); add(txtsubject1); add(lblsubject2);

13 add(txtsubject2); add(cmdreport); cmdreport.addactionlistener(this); public void actionperformed(actionevent ae) try if(ae.getsource()==cmdreport) rno=txtregno.gettext().trim(); course=txtcourse.gettext().trim(); sem=txtsemester.gettext().trim(); sub1=txtsubject1.gettext().trim(); sub2=txtsubject2.gettext().trim(); avg="avg Marks" +((Integer.parseInt(sub1)+Integer.parseInt(sub2))/2); rno="register Number:"+rno; course="course:"+course; sem="semester:"+sem; sub1="subject1:"+sub1; sub2="subject2:"+sub2; heading="student Report"; removeall(); showstatus(""); repaint(); catch(numberformatexception exc) showstatus("invalid Data"); public void paint(graphics g) g.drawstring(heading,30,30);

14 g.drawstring(rno,30,80); g.drawstring(course,30,100); g.drawstring(sem,30,120); g.drawstring(sub1,30,140); g.drawstring(sub2,30,160); g.drawstring(avg,30,180);

15 8. Write a program to calculate bonus for different departments using method overriding abstract class Departement double salary, bonus, totalsalary; public abstract void calbonus(double salary); public void displaytotalsalary(string dept) System.out.println(dept + "\t" + bonus + "\t" + totalsalary); class Accoutnts extends Departement public void calbonus(double sal) salary = sal; bonus = sal * 0.2; totalsalary = salary + bonus; class Sales extends Departement public void calbonus(double sal) salary = sal; bonus = sal * 0.3; totalsalary = salary + bonus; public class BonusCalculate public static void main(string[] args) Departement acc = new Accoutnts();

16 Departement sales = new Sales(); acc.calbonus(10000); sales.calbonus(20000); System.out.println("Departement \t Basic Salary \t Bonus \t Total Salary"); System.out.println(" "); acc.displaytotalsalary("accoutnts"); sales.displaytotalsalary("sales");

17 9. Write a program to implement thread,applets and graphics by implementing animation of ball moving import java.applet.*; import java.awt.*; /*<applet code="movingball" width=200 height=200> </applet>*/ public class MovingBall extends Applet implements Runnable int x=150,y=50,r=50; int dx=11,dy=7; Thread animator; volatile boolean pleasestop; public void paint(graphics g) g.setcolor(color.red); g.filloval(x-r,y-r,r*2,r*2); public void animate() Rectangle bounds=getbounds(); if((x-r+dx<0) (x+r+dx>bounds.width)) dx=-dx; if((y-r+dy<0) (y+r+dy>bounds.height)) dy=-dy; x+=dx; y+=dy; repaint(); public void run() while(!pleasestop) animate(); try

18 Thread.sleep(100); catch(interruptedexception e) public void start() animator=new Thread(this); pleasestop=false; animator.start(); public void stop() pleasestop=true;

19 10. (a) Write a program to implement mouse events. import java.awt.*; import java.awt.event.*; import java.applet.*; /*<applet code="mouseevents" width=300 height=300> </applet>*/ public class MouseEvents extends Applet implements MouseListener,MouseMotionListener String str=""; public void init() addmouselistener(this); addmousemotionlistener(this); public void paint(graphics g) g.drawstring(str,20,20); public void mousepressed(mouseevent me) str="mouse Button Pressed"; repaint(); public void mouseclicked(mouseevent me) str="mouse Button Clicked"; repaint(); public void mousereleased(mouseevent me) str="mouse Button Released"; repaint();

20 public void mouseentered(mouseevent me) str="mouse Entered"; repaint(); public void mouseexited(mouseevent me) str="mouse Exited"; repaint(); public void mousemoved(mouseevent me) str="mouse Moved"; repaint(); public void mousedropped(mouseevent me) str="mouse Dropped"; repaint(); public void mousedragged(mouseevent me) str="mouse Dragged"; repaint();

21 10. (b)write a program to implement keyboard events import java.awt.*; import java.awt.event.*; import java.applet.*; /*<applet code="keyboardevents"width=400 height=400> </applet> */ public class KeyBoardEvents extends Applet implements KeyListener String str=""; public void init() addkeylistener(this); requestfocus(); public void keytyped(keyevent e) str +=e.getkeychar(); repaint(0); public void keypressed(keyevent e) showstatus("key PRESSED"); public void keyreleased(keyevent e) showstatus("key RELEASED"); public void paint(graphics g) g.drawstring(str,15,15);

22 PART B 1. Write a program to demonstrate inheritance import java.io.*; import java.util.*; class TwoDshape double width, height; void showdim() System.out.println("Width and Height are:" + width + " and "+ height); class Triangle extends TwoDshape String style; double area() return (width * height) / 2; void showstyle() System.out.println("Triangle is" +style); class Shape public static void main(string[] args) throws IOException Triangle t1 = new Triangle(); Triangle t2 = new Triangle(); t1.width = 4.0; t1.height = 4.0; t1.style = "Filled";

23 t2.width = 4.0; t2.height = 4.0; t2.style = "Outlined"; System.out.println("Information about Triangle 1"); t1.showstyle(); t1.showdim(); System.out.println("Area is" +t1.area()); System.out.println("Information about Triangle 2"); t2.showstyle(); t2.showdim(); System.out.println("Area is" +t2.area());

24 2. Write a program to demonstrate this keyword class ThisDemo int i,j; ThisDemo() this(100, 200); System.out.println("No Argument Passed"); ThisDemo(int i, int j) this.i = i; this.j = j; void display() System.out.println("The value of i is: "+i); System.out.println("The value of j is: "+j); public static void main(string args[]) ThisDemo d1 = new ThisDemo(); d1.display();

25 3. Write a program to demonstrate wrapper class and its method import java.*; public class WrapperObject public static void main(string args[]) int i=100; Integer i1 = new Integer(i); Integer i2 = Integer.valueOf("123"); System.out.println("The premetive value of I! is:"+i1.intvalue()); System.out.println("The premetive value of I2 is:"+i2.intvalue()); String str1 = "1234"; int num2 = Integer.parseInt(str1); System.out.println("Value of num2: "+num2); System.out.println("The string value of I1 is:"+i1.tostring()); System.out.println("The string value of I2 is:"+i2.tostring());

26 4. Write a program to create an array of 5 elements find min and max elements import java.io.*; import java.util.*; class ArrayDemo public static void main(string args[]) throws IOException int[] x = new int[5]; int[] y = new int[x.length]; Scanner s = new Scanner(System.in); System.out.println("Enter array elements:"); for(int i=0; i<x.length; i++) x[i] = s.nextint(); System.out.println("Array Elements are:"); for(int i=0; i<x.length; i++) System.out.println(x[i]); y[i] = x[i]; System.out.println("After Copying Array Element are:"); for(int i=0; i<x.length; i++) System.out.println(y[i]); int min, max; min = max = x[0]; for(int i=0; i<x.length; i++) if(x[i] > max) max = x[i]; if(x[i] < min) min = x[i];

27 System.out.println("Maximum Value"+max); System.out.println("Minimum Value:"+min);

28 5. Write a program to demonstrate vectors import java.util.*; class VectorDemo public static void main(string args[]) Vector<String> v = new Vector<String>(); v.add("c"); v.add("java"); v.add("c++"); v.add("vb"); System.out.println("Initial Vector Content :" +v.tostring()); System.out.println("Last Element :" +v.lastelement()); System.out.println("Element at 2nd position :" +v.elementat(2)); v.insertelementat("fam", 2); v.insertelementat("c#", 0); System.out.println("After Inserting Vector Content :" +v.tostring()); v.removeelement(3); System.out.println("After Removing Vector Content :" +v.tostring()); v.setelementat("ds", 3); v.remove("vb"); System.out.println("After Removing 'VB' Vector Content :" +v.tostring());

29 6. Write a program to implement multiple inheritance with interface import java.io.*; class Student int rollnumber; void getnumber(int n) rollnumber = n; void putnumber() System.out.println("Roll Number:" +rollnumber); class Test extends Student float part1, part2; void getmarks(float m1, float m2) part1 = m1; part2 = m2; void putmarks() System.out.println("Marks Obtained:"); System.out.println("Part 1:"+part1); System.out.println("Part 2:"+part2); interface sports float sortwt = 6.0f; void putwt();

30 class Result extends Test implements sports float total; public void putwt() System.out.println("Sportwt:"+sortwt); void display() total = part1 + part2 + sortwt; putnumber(); putmarks(); putwt(); System.out.println("Total Score:"+total); class Hybrid public static void main(string[] args) Result student1 = new Result(); student1.getnumber(1234); student1.getmarks(27.5f, 43.5f); student1.display();

31 7. Write a program to demonstrate static variable and static method import java.io.*; class staticmethod static int val = 1024; static int valdiv2() return val/2; class Demo public static void main(string[] args) System.out.println("Value is:" +staticmethod.val); System.out.println("staticMethod.valDiv2():" +staticmethod.valdiv2()); staticmethod.val = 4; System.out.println("Value is:"+staticmethod.val); System.out.println("staticMethod.valDiv2():" +staticmethod.valdiv2());

32 8. Write a program to demonstrate multithreading class ThreadOne extends Thread public void run() for(int i=0;i<=10;i++) System.out.println(Thread.currentThread().getName()+i); class ThreadTwo extends Thread public void run() for(int i=11;i<=20;i++) System.out.println(Thread.currentThread().getName()+i); class ThreadThree extends Thread public void run() for(int i=21;i<=25;i++) System.out.println(Thread.currentThread().getName()+i); class ThreadSample public static void main(string args[]) ThreadOne t1=new ThreadOne(); ThreadTwo t2=new ThreadTwo(); ThreadThree t3=new ThreadThree(); Thread tr1=new Thread(t1,"Thread One"); Thread tr2=new Thread(t2,"Thread Two");

33 Thread tr3=new Thread(t3,"Thread Three"); tr1.start(); tr2.start(); tr3.start(); for(int i=26;i<=30;i++) System.out.println(Thread.currentThread().getName()+i);

34 9. Write a program to demonstrate Synchronization class Parenthesis void display(string s) System.out.println(""+s); try Thread.sleep(1000); catch (InterruptedException e) System.out.println("Interrupted"); System.out.println(""); class MyThread extends Thread String s1; Parenthesis p1; Thread t; public MyThread(Parenthesis p2, String s2) p1=p2; s1=s2; public void run() p1.display(s1); class NonSynchronized

35 public static void main(string[] args) Parenthesis p3 = new Parenthesis(); MyThread ta1 = new MyThread(p3, "Acharya"); Thread t1 = new Thread(ta1); MyThread ta2 = new MyThread(p3, "College"); Thread t2 = new Thread(ta2); t1.start(); t2.start();

36 10. Write a program to demonstrate user defined exception class negetive extends Exception private int mynumber; public negetive(int mynumber) this.mynumber=mynumber; public String tostring() return "Number cannot be negetive"+""+mynumber; public class User public static void main(string args[]) throws Exception int mynumber=getnumber(); if(mynumber<0) throw new negetive(mynumber); else System.out.println("Number is"+mynumber); public static int getnumber() return -6;

Program 20: //Design an Applet program to handle Mouse Events. import java.awt.; import java.applet.; import java.awt.event.*;

Program 20: //Design an Applet program to handle Mouse Events. import java.awt.*; import java.applet.*; import java.awt.event.*; /* */ public