Simple Shutdown Timer For Windows XP

Source code below will show you how to create simple shutdown timer for Windows XP.

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COMPLETE SOURCE CODE FOR : ShutdownComputer.java
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import javax.swing.JOptionPane;

public class ShutdownComputer
{
public static void main(String[]args)
{
 int wholeTimeBeforeShutdown=0;

 int hour=0;
 int minute=0;
 int second=0;

 try
 {
  String a=JOptionPane.showInputDialog(null,"HOUR","HOUR BEFORE SHUTDOWN",JOptionPane.QUESTION_MESSAGE);
  String b=JOptionPane.showInputDialog(null,"MINUTE","MINUTE BEFORE SHUTDOWN",JOptionPane.QUESTION_MESSAGE);
  String c=JOptionPane.showInputDialog(null,"SECOND","SECOND BEFORE SHUTDOWN",JOptionPane.QUESTION_MESSAGE);
 
  if((a==null)||(a.equals("")))
  {
   a="0";
  }
 
  if((b==null)||(b.equals("")))
  {
   b="0";
  }
 
  if((c==null)||(c.equals("")))
  {
   c="0";
  }
 
  int e=Integer.parseInt(a);
  int f=Integer.parseInt(b);
  int g=Integer.parseInt(c);
 
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown+((e*60)*60);
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown+(f*60);
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown+(g);
 
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown*1000;
 
  Thread.sleep(wholeTimeBeforeShutdown);
 
  Runtime.getRuntime().exec("shutdown -s -t 00 -f");
 }
 catch(Exception exception)
 {
  exception.printStackTrace();
 }
}
}

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JUST COMPILE AND EXECUTE IT
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Remove element from array

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COMPLETE SOURCE CODE FOR : RemoveElementFromAnArray.java
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public class RemoveElementFromAnArray
{
public static void main(String[]args)
{
 //Now we want to remove last element,"crocodile"
 String[]animal={"lion","tiger","elephant","crocodile"};

 //Step 1:Create a temp array with sizeArrayAnimal-1
 String[]temp=new String[animal.length-1];

 //Step 2:Copy element from "lion" to "elephant" into array temp
 System.arraycopy(animal,0,temp,0,(animal.length-1));

 //Make animal array point to temp array
 animal=temp;

 //Print all element in animal
 int temp2=0;
 while(temp2!=animal.length)
 {
  System.out.println(animal[temp2]);
  temp2=temp2+1;
 }
}
}

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JUST COMPILE AND EXECUTE IT
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Add element in array

Note : Source code below will show you how to add new element in a created array. It will add "monkey" word in an array that contains "lion","tiger","elephant","crocodile" word.

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COMPLETE SOURCE CODE FOR : AddElementInArray.java
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public class AddElementInArray
{
public static void main(String[]args)
{
 //Create array with it's component
 String[]animal={"lion","tiger","elephant","crocodile"};

 //Add an element - "Monkey"
 String a="monkey";

 //Step 1:Create temp array (size=(arrayThatWeWantToAddElement)+1)
 String[]temp=new String[(animal.length)+1];
 System.arraycopy(animal,0,temp,0,animal.length);
 temp[temp.length-1]=a;

 //Make animal array point to temp array
 animal=temp;

 //Print all element in animal
 int temp2=0;
 while(temp2!=animal.length)
 {
  System.out.println(animal[temp2]);
  temp2=temp2+1;
 }
}
}

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JUST COMPILE AND EXECUTE IT
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Copy all contents from one array to other array

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COMPLETE SOURCE CODE FOR : CopyArray.java
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public class CopyArray
{
public static void main(String[]args)
{
 //Create array with it's component
 String[]animal={"lion","tiger","elephant","crocodile"};

 //Create empty array with size same as animal
 String[]animal2=new String[animal.length];

 //Copy all element in animal into animal2
 System.arraycopy(animal,0,animal2,0,animal.length);

 //Print all element in animal2
 int temp=0;
 while(temp!=(animal.length))
 {
  System.out.println(animal2[temp]);
  temp=temp+1;
 }
}
}

*****************************************
JUST COMPILE AND EXECUTE IT
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