Jul
Learn Java by Studying sample programs
Written by Cybe Know How on July 9th, 2008
//prog1 Covertion of Celcious to Fahrenheit ///page no 1
import java.io.*;
import java.lang.*;
public class tempdegree
{
public static void main(String args[]) throws IOException
{
double c=0;
double f=0;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.println(”Enter Temp in Fahrenheit =”);
String v1 = input.readLine();
f=Integer.parseInt(v1);
c=5.0/9.0*(f-32.0);
System.out.println(”Temp in Celcius =”+c);
if(c>37.4)
{
System.out.println(”There is Feaver”);
}
else
{
System.out.println(”There is no Feaver”);
}
}
}
///prog2 use of switch case
import java.io.*;
public class modiSwitch
{
public static void main(String args[]) throws IOException
{
int a=0,b=0,c=0, x=0;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.print(”Enter 1st number= “);
String v1 = input.readLine();
a=Integer.parseInt(v1);
System.out.print(”Enter 2nd number= “);
String v2 = input.readLine();
b=Integer.parseInt(v2);
System.out.print(”Enter your option= “);
String v3 = input.readLine();
x=Integer.parseInt(v3);
switch(x)
{
case 1:
c=b+a;
System.out.println(”sum is =” +c);
break;
case 2:
c=b-a;
System.out.println(”diff is =” +c);
break;
case 3:
c=b*a;
System.out.println(”product is =” +c);
break;
default:
System.out.println(”invalid”);
}
} ///Page 2
}
///Prog 3 area and perimeter of a rectangle
import java.io.*;
import java.lang.*;
public class rectangle
{
public static void main(String args[]) throws IOException
{
float length=0;
float area=0;
float peri=0;
float breadth=0;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.println(”Enter the length =”);
String v1 = input.readLine();
length=Integer.parseInt(v1);
System.out.println(”Enter the breadth =”);
String v2 = input.readLine();
breadth=Integer.parseInt(v2);
if(breadth
{
area=length*breadth;
peri=2*(length+breadth);
System.out.println(”area =”+area);
System.out.println(”Perimeter =”+peri);
}
else
System.out.println(”invalid breadth”);
}
}
///Prog 4 find the biggest out of three no.
import java.io.*;
import java.lang.*;
public class biggest
{
public static void main(String args[]) throws IOException
{
int a=0;
int b=0;
int c=0;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.println(”Enter 1st num=”);
String v1 = input.readLine();
a=Integer.parseInt(v1);
System.out.println(”Enter 2nd num=”);
String v2 = input.readLine();
b=Integer.parseInt(v2);
System.out.println(”Enter 3rd num=”);
String v3 = input.readLine();
c=Integer.parseInt(v3);
if(a>b && a>c)
{
System.out.println(”Biggest is =”+a); ///Page 3
}
else
{
if(b>a && b>c)
{
System.out.println(”Biggest is =”+b);
}
else
{
System.out.println(”Biggest is =”+c);
}
}
}
}
//prog 5 Sum of even Number
import java.io.*;
import java.lang.*;
public class dowheel
{
public static void main(String args[]) throws IOException
{
int i=0;
int sum=0;
do
{
i+=2;
System.out.println(” “+i);
sum=sum+i;
} while (i<10);
System.out.println(”Sum = “+sum);
}
}
/// Prog 6 Leap year
import java.io.*;
import java.lang.*;
public class Leapyear
{
public static void main(String args[]) throws IOException
{
int y=0;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.println(”Enter Year =”);
String v1 = input.readLine();
y=Integer.parseInt(v1);
if(y>9999)
{
System.out.println(”invalid, enter a valid year”);
}
if(y%4==0 && y%400!=0)
{
System.out.println(”This year is a leap year”);
}
else
{
System.out.println(”This year is not a leap year”);
} ///Page 4
}
}
///Prog 7 odd Number
import java.io.*;
import java.lang.*;
public class dogh
{
public static void main(String args[]) throws IOException
{
int i=0;
int n=0;
int sum=0;
do
{
n=2*i+1;
System.out.println(” “+n);
sum=sum+n;
i=i+1;
} while (n<9);
System.out.println(”Sum = “+sum);
}
}
///Prog 8 Calculater
// aWAP for using switch case
import java.io.*;
class casesw
{
public static void main(String args[])throws IOException
{
int a,b,c,x;
a=0;
b=0;
c=0;
x=0;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.print(”Enter 1st number= “);
String v1 = input.readLine();
a=Integer.parseInt(v1);
System.out.print(”Enter 2nd number=”);
String v2 = input.readLine();
b=Integer.parseInt(v2);
System.out.print(”Enter your choice=”);
String v3 =input.readLine();
x=Integer.parseInt(v3);
switch(x)
{
case 1:
c=b+a;
System.out.println(”sum is =” +c);
break;
case 2:
c=b^a;
System.out.println(”diff is =” +c);
break;
case 3:
c=b*a;
System.out.println(”product is =” +c);
break;
case 4:
c=b/a;
System.out.println(”quotent is=”+c);
break;
default:
System.out.println(”invalid”);
}
}
}
//Prog9 Vol of a cone
import java.io.*;
import java.lang.*;
public class cone
{
public static void main(String args[]) throws IOException
{
double r=0;
double h=0;
double l=0;
double v=0;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.println(”Enter Redius =”);
String v1 = input.readLine();
r=Integer.parseInt(v1);
System.out.println(”Enter hight =”);
String v2 = input.readLine();
h=Integer.parseInt(v2);
System.out.println(”Enter slant Hight =”);
String v3 = input.readLine();
l=Integer.parseInt(v3);
v=(3.14*r*r*h)/3;
System.out.println(”Volume is =” +v);
}
}
