Java Using File

Skip n bytes while reading the file using File Input Stream

import java.io.*;

public class SkipBytesReadFile

{

public static void main(String[] args)

{

File file = new File("C://FileIO//ReadString.txt");

   

try

{

FileInputStream fin = new FileInputStream(file);

int ch;

fin.skip(10);

while( (ch = fin.read()) != -1 )

System.out.print((char) ch);

}

catch(FileNotFoundException e)

{

System.out.println("File not found" + e);

}

catch(IOException ioe)

{

System.out.println("Exception while reading the file " + ioe);

    }

  }

}

Add an element to specified index of Java Array List

import java.util.ArrayList;

public class AddElementToSpecifiedIndexArrayListExample

{

public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("1");

arrayList.add("2");

arrayList.add("3");

arrayList.add(1,"Inserted element"); System.out.println("ArrayList contains...");

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

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

   }

}

Append all elements of other Collection to Java Array List

import java.util.ArrayList;

import java.util.Vector;

public class AppendAllElementsOfOtherCollectionToArrayListExample

{

 public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("1");

arrayList.add("2");

arrayList.add("3");

Vector v = new Vector();

v.add("4");

v.add("5");

arrayList.addAll(v);

System.out.println("After appending all elements of Vector,

ArrayList contains..");

for(int i=0; i

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

  }

}

Copy all elements of Java Array List to an Object Array

import java.util.ArrayList;

public class CopyElementsOfArrayListToArrayExample

{

public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("1");

arrayList.add("2");

arrayList.add("3");

arrayList.add("4");

arrayList.add("5");

Object[] objArray = arrayList.toArray();

System.out.println("ArrayList elements are copied into an Array.

Now Array Contains..");

for(int index=0; index < objArray.length ; index++)

System.out.println(objArray[index]);

   }

}

Get Size of Java Array List and loop through elements

import java.util.ArrayList;

public class GetSizeOfArrayListExample

{

public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("1");

arrayList.add("2");

arrayList.add("3");

int totalElements = arrayList.size();  System.out.println("ArrayList contains...");

for(int index=0; index < totalElements; index++)

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

   }

}