ITERATE JAVA

Iterate through elements Java Vector using ListIterator

import java.util.Vector;

import java.util.ListIterator; 

public class IterateThroughVectorUsingListIteratorExample

{

public static void main(String[] args)

{

Vector v = new Vector();

v.add("1");

v.add("2");

v.add("3");

v.add("4");

v.add("5");

ListIterator itr = v.listIterator();

System.out.println("Iterating through Vector elements in forward direction...");

while(itr.hasNext())

System.out.println(itr.next());

System.out.println("Iterating through Vector elements in backward direction...");

while(itr.hasPrevious())

System.out.println(itr.previous());

  }

}

Remove All Items From a List

import java.applet.Applet;

import java.awt.List;

public class RemoveAllItemsFromAList extends Applet

{

public void init()

{

List list = new List(5, true);

list.add("One");

list.add("Two");

list.add("Three");

list.add("Four");

list.add("Five");

list.add("Six");

list.add("Seven");

add(list);

list.removeAll();

  }

}

Swap elements of Java ArrayList

import java.util.ArrayList;

import java.util.Collections;

public class SwapElementsOfArrayListExample

{

 public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("A");

arrayList.add("B");

arrayList.add("C");

arrayList.add("D");

arrayList.add("E");

System.out.println("Before swaping, ArrayList contains : " arrayList);

Collections.swap(arrayList,0,4);

System.out.println("After swaping, ArrayList contains : " + arrayList);

   }

}

Get Foreground Color Of an Applet Window

import java.applet.Applet;

import java.awt.Color;

import java.awt.Graphics;

public class GetForgroundColorExample extends Applet

{

public void paint(Graphics g)

{

  Color c = getForeground();

  g.drawString(c.toString(),50,50);

   }

}

Replace an element at specified index of Java ArrayList

import java.util.ArrayList;

public class ReplaceElementAtSpecifiedIndexArrayListExample

{

public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("1");

arrayList.add("2");

arrayList.add("3");

arrayList.set(1,"REPLACED ELEMENT");

System.out.println("ArrayList contains...");

for(int index=0; index < arrayList.size(); index++)

System.out.println(arrayList.get(index));

   }

}

Replace an element at specified index of Java ArrayList

import java.util.ArrayList;

public class ReplaceElementAtSpecifiedIndexArrayListExample

{

public static void main(String[] args)

 {

ArrayList arrayList = new ArrayList();

arrayList.add("1");

arrayList.add("2");

arrayList.add("3");

arrayList.set(1,"REPLACED ELEMENT");

System.out.println("ArrayList contains...");

for(int index=0; index < arrayList.size(); index++)

System.out.println(arrayList.get(index));

   }

}

Create Custom Color Using HSB

import java.applet.Applet;

import java.awt.Color;

import java.awt.Graphics;

public class CreateCustomColorUsingHSB extends Applet

{ 

public void paint(Graphics g)

 {

Color customColor = Color.getHSBColor(0.9f,0.5f,0.8f);

this.setForeground(customColor);

g.drawString("This is a custom HSB color", 10, 50);

  }

}

Convert short primitive to Short object

public class shortToShortExample

 {

public static void main(String[] args)

{

short s = 10;

Short sObj = new Short(s);

System.out.println(sObj);

   }

}

Read short from file using DataInputStream

import java.io.DataInputStream;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

public class ReadShortFromFile

{

public static void main(String[] args)

{

 String strFilePath = "C://FileIO//readShort.txt";

   

try

{

FileInputStream fin = new FileInputStream(strFilePath);

DataInputStream din = new DataInputStream(fin);

short s = din.readShort();

System.out.println("short : " + s);

din.close();

}

catch(FileNotFoundException fe)

{

System.out.println("FileNotFoundException : " + fe);

}

catch(IOException ioe)

{

System.out.println("IOException : " + ioe);

      }

   }

}

Java String isEmpty

public class JavaStringIsEmptyExample

{

public static void main(String args[])

{

String str1 = "";

String str2 = null;

String str3 = "Hello World";

System.out.println("Is String 1 empty? :" + str1.isEmpty()); System.out.println("Is String 3 empty? :" + str3.isEmpty());

   }

}

Java float

import java.util.*;

public class JavaFloatExample

 {

public static void main(String[] args)

{

float = ;

float f = 10.4f;

System.out.println("Value of float variable f is :" + f);                

   }

}

Compare Two Numbers

public class CompareTwoNumbers

{

public static void main(String[] args)

{

int num1 = 324;

int num2 = 234;               

if(num1 > num2)

{

System.out.println(num1 + " is greater than " + num2);

}

else if(num1 < num2)

{

System.out.println(num1 + " is less than " + num2);

}

else

{

System.out.println(num1 + " is equal to " + num2);

      }

   }

}

Determine If Year Is Leap Year

public class DetermineLeapYearExample

{

 public static void main(String[] args)

{

 int year = 2004;                

 if((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0)))

System.out.println("Year " + year + " is a leap year");

else

System.out.println("Year " + year + " is not a leap year");

  }

}

   

If Else statement

public class SimpleIfElseStatementExample

 {

public static void main(String[] args)

{

int i = 0;       

if(i == 0)

System.out.println("i is 0");

else

System.out.println("i is not 0");

    }

}

If Else If statement

public class IfElseIfElseExample

{

public static void main(String[] args)

{

int i = 10;

if(i > 100)

System.out.println("i is grater than 100");

else if(i > 50)

System.out.println("i is grater than 50");

else

System.out.println("i is less than 50");

   }

}

If statement

public class SimpleIfStatementExample

{

           public static void main(String[] args)

{

  boolean blnStatus = true;

  if(blnStatus)

         System.out.println("Status is true");

    }

  }