Hi friend,

Code for an array for storing tempretures as double values :

import java.io.*;
import java.util.*;

class Tempearture
{
public static void main(String[] args) throws IOException
{
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader bufReader = new BufferedReader(isr);

ArrayList al = new ArrayList();



String option="";
double avg = 0;
double sum = 0;

do
{
System.out.println("Enter Options");
System.out.println("a. Input a new tempreture");
System.out.println("b. Calculate current average tempreture");
System.out.println("c. Stop the program");
option = bufReader.readLine();

if(option.equals("a"))
{
System.out.println("Enter new tempreture");
al.add(Double.parseDouble(bufReader.readLine()));

}

if(option.equals("b"))
{
for(int i=0;i<al.size();i++)
{
sum = sum + Double.parseDouble(al.get(i).toString());

}
avg = sum/al.size();
System.out.println("avg : " + avg);
}

if(option.equals("c"))
{
System.exit(0);


}
}
while(!option.equals("c"));




}
}

Thanks

Hi friend,

Answer Ex1

class CharArray
{
public static void main(String[] args)
{
char charAr[] = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
System.out.println("Print the Array of Even Index");
for(int i=0;i<charAr.length;i++)
{
if(i%5==0)
System.out.println("");
System.out.print(" " + charAr[i] + " ");

}


}
}

Hi friend,

Answer Ex2

import java.io.*;
import java.util.*;

class ArElemnt
{
public static void main(String[] args) throws IOException
{

int intAr[] = new int[50];

for(int i=0;i<25;i++)
{
intAr[i] = i*i;

}
for(int i=25;i<50;i++)
{
intAr[i] = 3*i;

}



for(int i=0;i<50;i++)
{
if(i==0)
{
System.out.println("First 25 components are equal to the square of the index value");
}
if(i==25)
{
System.out.println("Next 25 components are equal to three times the index value");
}
System.out.println("intAr["+i+"] " + intAr[i]);
}



}
}

Hi friend,

Answer Ex3

class ArrayInt
{
public static void main(String[] args)
{
int intAr[] = {2,5,9,14,123,200,234};
System.out.println("Print the Array of Even Index");
for(int i=0;i<intAr.length;i++)
{
if(i%2==0)
System.out.println("intAr["+i+"] : " + intAr[i]);
}

System.out.println("Print the Array of Even Number");
for(int i=0;i<intAr.length;i++)
{
if(intAr[i]%2==0)
System.out.println("intAr["+i+"] : " + intAr[i]);
}
}
}

For more information on java visit to :

http://www.roseindia.net/java/


Thanks