source file name: Revno.C  #include<stdio.h> int main() { long n,d1,d2,d3,d4,d5; long revno; //clrscr(); printf("\n enter any 5 digit number: "); scanf("%ld",&n);// 12345 d1=n%10;    //     d1=    12345%10=5 n=n/10;       //   12345/10=1234 d2=n%10;        // 1234%10=4     d2=4 n=n/10;   …

source file  name: SumDig1_4.C  #include<stdio.h> int main() { int n,d1,d2,d3,d4,d5; int sum=0; //clrscr(); printf("\n enter any only 4 digit number: "); scanf("%d",&n); d1=n%10; n=n/10; d2=n%10; n=n/10; d3=n%10; n=n/10; d4=n%10; sum=d1+d4; printf("\n sum of first and fourth digit=%d…

source file name: FarToCel.C  #include<stdio.h> int  main() { float F,C; //clrscr(); printf("\n Enter Farhenheit temp.: "); scanf("%f",&F); C=(5*(F-32))/9; printf("\n Centigrade temp.=%f",C); //getch(); return 0; } output:

source file name:  mathdemo3.java class mathdemo3 { public static void main(String as[]) { System.out.println("power values  of 2 base program "); for(int b=1;b<=10;b++) System.out.println(" 2 raised to "+b+" is: "+Math.pow(2,b)); } } output: D:\JavaPrograms\Misc>javac mathdemo3.jav…

source file name:  strtokendemo.java import java.util.*; import java.text.*; class strtokendemo { public static void main(String as[]) { System.out.println("String Tokenizer class program"); String s="123.50 2.5 l6.3f 520 10.4 10l.25f 10.2505"; System.out.println(" list of tokens: "); St…

source file name: enumdemo.java import java.util.*; class enumdemo { public static void main(String as[]) { System.out.println("Vector demo program"); Vector v=new Vector(); Object ob;  for(int i=0;i<as.length;i++)  {  ob=new String(as[i]);  v.add(ob);  } System.out.println("vector v="+v); Stri…

source file name:  vectordemo1.java import java.util.*; class vectordemo1 { public static void main(String as[]) { System.out.println("vector demo program"); Vector v1=new Vector(); String s1="one"; String s2="two"; Integer il=new Integer(100); Float f=new Float(2.53f); v1.add(s1); v1.ad…

source file name: matrix.java   import java.io.*; import java.util.*; public class matrix {       public static void main(String[]args)throws IOException{            int[][]dim=new int[2][2]; BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in));        System.out.println("Enter the rows of ma…

source file name: rangeprimenocmd.java class rangeprimenocmd { void prime(int n) { int d=2; while(d<n) { if(n%d==0) break; else d++; } if(d==n) System.out.print(n+" "); } public static void main(String args[]) { rangeprimenocmd p=new rangeprimenocmd(); int n1=Integer.parseInt(args[0]); int n2=Integer.pars…

source file name:  ReverseDemo1.java import java.io.*; class ReverseDemo1 { public static void main(String args[]) throws IOException { String str=""; try { DataInputStream dis=new DataInputStream(System.in); System.out.println("enter any string "); str=dis.readLine(); } catch(Exception e) { Syste…

source file name:  stringdemo3.java class stringdemo3 { public static void main(String as[]) { String[] students=new String[as.length]; String temp=null; for(int i=0;i<as.length;i++) students[i]=as[i];//command line students name stores in students array System.out.println("givens student list:"); for(in…

source file name:  stringdemo2.java class stringdemo2 { public static void main(String as[]) { System.out.println("string demo program"); System.out.println("upper case conversion: "+"One".toUpperCase()); System.out.println("lower case conversion: "+"Two".toLowerCase(…

Write a Javaprogram to illustrate Java string handling for following functions: Concatenation of “dbjcollege”,”chiplun”, Reverse of “12721”. Determine whether the two strings:”dbjcollege”,”DBJCollege” are equal or not? Convert  the string “Hello World” to uppercase. Convert the string “Let Us C”to lowercase.Length of…

source file name:  DownloadFileDemo.java import java.io.*;   import java.net.*;    class DownloadFileDemo {   public static void main(String[] dbj) {   InputStream in=null; OutputStream out=null; try {   URL url=new URL(dbj[0]); in=url.openStream(); if(dbj.length==2) out=new FileOutputStream(dbj[1]); else out=System.o…

source file name:  convdemo.java import java.io.*; class convdemo { public static void main(String as[]) { int n=1; System.out.println("enter value:"); try{ DataInputStream dis=new DataInputStream(System.in); String s=dis.readLine();//accept input number from user n=Integer.parseInt(s); System.out.println(&…

source file name:    mathdemo4.java class mathdemo4 { public static void main(String as[]) { System.out.println("squares and cubes of any 10 random numbers: "); System.out.println("n\tsquare\tcube"); for(int b=1;b<=10;b++) { int n=(int)(20*Math.random()); int sq=n*n; int cube=n*n*n; System.out.p…

source file name:  mathdemo2.java class mathdemo2 { public static void main(String as[]) { System.out.println("square root program"); for(int b=1;b<=10;b++) System.out.println("square root of "+b+" is: "+Math.sqrt(b)); } } output: D:\JavaPrograms\Misc>javac mathdemo2.java D:\JavaPr…

source file name:    mathdemo1.java class mathdemo1 { public static void main(String as[]) { System.out.println("square root value:"+Math.sqrt(36)); System.out.println("power value:"+Math.pow(5,4)); System.out.println("maximum between 2 numbers:"+Math.max(100,50)); System.out.println(&quo…

source file name:  InetAddressDemo.java import java.io.*;   import java.net.*;    class InetAddressDemo {   public static void main(String[] args) {   try {   InetAddress ip1=InetAddress.getByName("sjnprogramming.blogspot.com");   InetAddress ip2=InetAddress.getLocalHost();  InetAddress[] ip=InetAddress.get…

Single Inheritance  source file name: singledemo.java class A { void sum(int a, int b) { System.out.println("addition ="+(a+b)); } } class B extends A { void sub(int a, int b) { System.out.println("subtraction ="+(a-b)); } } class singledemo { public static void main(String as[]) { System.out.prin…

Hierarchical Inheritance : source file name:  Hierarchicaldemo.java class A  {  void sqcube(int n)  {  int sq=n*n;  int c=n*n*n;  System.out.println("square="+sq+" cube="+c);  }  }  class B extends A  {  void add(int a,int b)  {  System.out.println("sum="+(a+b));  } void sub(int a,int b)…

Multilevel Inheritance: Source file Name: Multileveldemo.java class A  {  void sum(int a,int b)  {  System.out.println("sum="+(a+b)); }  }  class B extends A  {  void sub(int a,int b)  {  System.out.println("substract="+(a-b)); } }  class C extends B  {  void sqcube(int n)  {  int sq=n*n;  int c=…

source file name:    TabsDemo.java import java.io.*; public class TabsDemo { public static void main(String[]args) { File infile=new File(args[0]); File outfile=new File(args[1]); FileReader ins=null; FileWriter fos=null; int cnt=0; try{ ins=new FileReader(infile); fos=new FileWriter(outfile); int ch;  while((ch=ins.r…

Write an application that writes the first 15 numbers of the Fibonacci series to a file .Write a second application that reads this data from a file and display it. For both application, specify, the name of the file  as command-line argument. source file name:  fibfilewrite.java   import java.io.*; class fibfilewrit…

Write a Java program that illustrate Method Over-riding concept. Class Bond is extended by ConvertibleBond. Each of these classes defines a display() method that  outputs the string 'Bond" or "ConvertibleBond" respectively. Declare an array to hold six Bond objects. Initialize the elements of the…

Create a class called  Disp containing the instance variable n , to display the following classes message "I am Good" whenever n<0 and the message "I am Great"   otherwise . This  class is inherited by another class Display  containing the instance variable n. This class contains   a method that…

source file name:    InheritanceOverload.java class A { int x; public A(int a)      {      x=a;      } public void display() { System.out.println("class A"); } } class B extends A { int y; public B(int a,int b)      { super(a);       y=b;      } public void display() { int gcd=gcd(); int lcm=lcm(gcd); System…

Write a java program consisting of following classes. A class number stores nine cards number from 2 to 10 using nine_no() method and face cards are stored using instance variable.A method code() determine the card from the suit with number and the color of the card.There is another method called face() to find t…

Initialize an array of size 10 and find the largest integer and smallest integer in the array. Also to display the array elements 5 per line then display in the new line the largest and smallest integer. class array8 { public static void main(String as[]) { int arr[]={10,5,25,3,-4,100,1000,-10,77,38}; System.out.pri…

source file name: TransMatrix,java class TransMatrix { public static void main(String as[]) { int A[][]={{10,5,25},{3,-4,10},{1,2,3},{11,12,13}}; int B[][]=new int[3][4]; System.out.println("Matrix A"); for(int i=0;i<4;i++) { for(int j=0;j<3;j++) { System.out.print(A[i][j]+" "); } System.out…

source file name:  displayarray.java class disparray { public static void main(String as[]) { int A[][]=new int[3][3]; System.out.println("3 * 3 matrix values are generated by random()"); for(int i=0;i<3;i++) { for(int j=0;j<3;j++) { A[i][j]=(int)(20*Math.random()); } } System.out.println("displa…

source file  name: MeanStdDemo.java class MeanSD { public double mean(double a[]) { double sum=0.0; for(int i=0;i<a.length;i++) sum=sum+a[i]; return(sum/a.length); } public double std_dev(double a[]) { double x=0.0,sum=0.0; x=mean(a); for(int i=0;i<a.length;i++) sum+=(x-a[i])*(x-a[i]); return (Math.sqrt(sum/a.le…

source file name: array1.java class array1 { public static void main(String as[]) { int arr[]={10,5,25,3,-4,100}; System.out.println("Array numbers before sorting"); for(int i=0;i<arr.length;i++) System.out.println(arr[i]); int i,j; for(i=0;i<arr.length;i++) { for(j=0;j<arr.length;j++) { if(arr[i]&…

Write a Java program to by considering three positive integer a,b and c and determine whether they can form three sides of a triangle .if yes determine whether triangle is equilateral, isosceles or scalene. Display the message accordingly. import java.lang.Math; class Triangle { public static void main(String args[]…

Write a java program to by considering three positive integers a,b and c determine whether they can form three sides of a triangle yes determine whether triangle is right angle or obtuse or acute. Display the message accordingly. import java.lang.Math; class RightTriangle { public static void main(String args[]) { i…

source file name:  reversenocmd.java class reversenocmd { void reverse(int no) { int d; long revno=0; while(no>0) { d=no%10; revno=revno*10+d; no=no/10; } System.out.println("reverse number: "+revno); } public static void main(String args[]) { int n=Integer.parseInt(args[0]);  reversenocmd ob=new reverse…

source file name: Factorial.java class Factorial { public static void main(String args[]) { int no=Integer.parseInt(args[0]); int fact=1; for(int i=1;i<=no;i++) fact=fact*i; System.out.println("The Factorial of " + no + " is "+fact); } }   output: D:\JavaPrograms\CmdPrograms>javac Factorial.…

Write a java program to input the telephone and number of calls. Calculate and display the bill amount, which include fixed rent of Rs.400.The first 150 calls are free with excess calls are changed at 80 paise each.  class PhoneBill { public static void main(String args[]) { int phno=Integer.parseInt(args[0]); int n…

source file name:  Expenses.java class Expenses  { public static void main(String args[]) { int p=Integer.parseInt(args[0]); //conversion of Command line values into integer value if(Integer.parseInt(args[0])>100) System.out.println("The Price is="+(p-(p*10/100))); else System.out.println("The Price…