Java Source Code to Various Projects

import java.io.IOException;
class myclass
{
          public static void main(String[] args) throws IOException, InterruptedException
          {
                    Process p = Runtime.getRuntime().exec("cmd /c start /MIN helloworld.exe");
                    p.waitFor();
          }

}

Enter password: *******

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 1 to server version: 4.1.22-community-nt

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show databases;

+----------+

| Database |

+----------+

| mysql |

| test |

+----------+

2 rows in set (0.08 sec)

mysql> drop DATABASE IF EXISTS myaddressbook4;

mysql> create database myaddressbook4;

Query OK, 1 row affected (0.01 sec)

mysql> show databases;

+----------------+

| Database |

+----------------+

| myaddressbook4 |

| mysql |

| test |

+----------------+

3 rows in set (0.00 sec)

mysql> use myaddressbook4;

Database changed

mysql> create table phonelistTable(id INT NOT NULL AUTO_INCREMENT, PRIMARY KEY(id), Last VARCHAR(255), First VARCHAR(255), Phone VARCHAR(255));

Query OK, 0 rows affected (0.17 sec)

mysql> insert into phonelistTable(Last,First,Phone) values ('Krumm','Jim','123-4567');

Query OK, 1 row affected (0.05 sec)

mysql> insert into phonelistTable(Last,First,Phone) values ('Powers','Austin','444-4567');

Query OK, 1 row affected (0.01 sec)

mysql> insert into phonelistTable(Last,First,Phone) values ('Slick','Tom','555-4567');

Query OK, 1 row affected (0.02 sec)

mysql> insert into phonelistTable(Last,First,Phone) values ('Timberlake','Justin

','555-4567');

Query OK, 1 row affected (0.03 sec)

mysql> show tables;

+--------------------------+

| Tables_in_myaddressbook4 |

+--------------------------+

| phonelisttable |

+--------------------------+

1 row in set (0.00 sec)

mysql> select * from phonelistTable;

+------------+--------+----------+

mysql> select * from phonelistTable;

+----+------------+---------+----------+

| id | Last | First | Phone |

+----+------------+---------+----------+

| 1 | Krumm | Jim | 123-4567 |

| 2 | Powers | Austin | 444-4567 |

| 3 | Slick | Tom | 555-4567 |

| 4 | Timberlake | Justin | 555-4567 |

+----+------------+---------+----------+

4 rows in set (0.00 sec)4 rows in set (0.03 sec)

import javax.swing.*;

public class trigFun

{

      public static void main(String args[])

      {       

         String temp;

         temp=JOptionPane.showInputDialog(null, "Enter an integer to take factorial of");

         int myFactorial=Integer.parseInt(temp);

         System.out.println("Factorial of("+temp+")="+factorial(myFactorial));

         temp=JOptionPane.showInputDialog(null, "Enter a radian value");

         double myRadian=Double.parseDouble(temp);

         System.out.println("sin("+myRadian+")="+sin(myRadian));

         System.out.println("cos("+myRadian+")="+cos(myRadian));

         System.out.println("tan("+myRadian+")="+tan(myRadian));    

      }

      public static double factorial(int n)

      {

         double sum=1;

         for(double i=n; i>0; i--)

         {

             sum=sum*i;

         }

         return sum;

      }

      public static double sin(double radian)//calculated using mclauren series

      {

         int sign;

         if (radian<-3.141592653589793)

               sign=0;

            else

              sign=1;

         if (sign==0)

         {

               while(radian<-3.141592653589793)

               {

                     radian=radian+6.283185307179586;

               }

         }

         if (sign==1)

         {

               while(radian>3.141592653589793)

               {

                     radian=radian-6.283185307179586;

               }

         }

         double result=0;     

         int j=1;                  

         for (double i=1; i<=21;i=i+2)

         {  //21 is a large arbitrary value

               if(j%2==0)

               {

                      result=result-1*(pow(radian, i))/((double)(factorial((int)(i))));

               }

               else

               {

                     result=result+1*(pow(radian, i))/((double)(factorial((int)(i))));

               }

               j=j+1;

         }

         return result;

      }

      public static double cos(double radian)

      {

         int sign;

         if (radian<0)

               sign=0;

            else

              sign=1;

         if (sign==0)

         {

               while(radian<-3.141592653589793)

               {

                     radian=radian+6.283185307179586;

               }

         }

         if (sign==1)

         {

               while(radian>3.141592653589793)

               {

                     radian=radian-6.283185307179586;

               }

         }

         double result=0;           

         int j=1;                  

         for (double i=0; i<=20;i=i+2)

         {

               if(j%2==0)

               {

                      result=result-1*(pow(radian, i))/((double)(factorial((int)(i))));

               }

               else

               {

                     result=result+1*(pow(radian, i))/((double)(factorial((int)(i))));

               }

               j=j+1;

         }

         return result;

      }

      public static double tan(double radian)

      {

         int sign;

         if (radian<0)

               sign=0;

            else

              sign=1;

         if (sign==0)

         {

               while(radian<-3.141592653589793)

               {

                     radian=radian+6.283185307179586;

               }

         }

         if (sign==1)

         {

               while(radian>3.141592653589793)

               {

                     radian=radian-6.283185307179586;

               }

         }

         return sin(radian)/cos(radian);

      }

      public static double pow(double b, double exp)

      { // an incomplete pow function that only calculates correctly for integer exp's

         double result=1;

         if(exp==0 && b==0)

               return 1./0;

         if(exp==0 && b !=0)

               return 1;              

         for(int i=1; i<=exp; i++)

         {

           result=result*b;

         }

         return result;

      }

}

      import javax.swing.*;

      public class sqrt

      {

          public static void main(String args[])

          {

            String tempString=JOptionPane.showInputDialog("Enter a positive number");

            double number=Double.parseDouble(tempString);

            System.out.println("Square root of " + number+"="+sqrt(number));                     

          }

          public static double sqrt(double number)

          { //square root Babylonian method

                    double estimate=number;

                    double divisor=2;

                //below 100 is arbitrary, for very small decimals  i values must be large

                    for(int i=0; i<100; i++)

                    {

                        estimate=number/divisor;      

                        estimate=(estimate+divisor)/2; //find average estimate & divisor

                        divisor=estimate;

                    }

                    return estimate;           

          }

      }