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Aatul Palandurkar

Posts Tagged ‘Atul Palandurkar

Hi everyone,

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Particulars Raspberry Pi 3 Model B Raspberry Pi 2 Model B
Processor Chipset Broadcom BCM2837 64Bit Quad Core Processor powered Single Board Computer running at 1.2GHz Broadcom BCM2836 32Bit Quad Core Processor powered Single Board Computer running at 900MHz
Processor Speed QUAD Core @1.2 GHz QUAD Core @900 MHz
RAM 1GB SDRAM @ 400 MHz 1GB SDRAM @ 400 MHz
Storage MicroSD MicroSD
USB 2.0 4x USB Ports 4x USB Ports
Max Power Draw/voltage 2.5A @ 5V 1.8A @ 5V
GPIO 40 pin 40 pin
Ethernet Port Yes Yes
WiFi Built in No
Bluetooth LE Built in No

Visit here for Raspberry Pi Training

Objective :

  • Passing data between activities in Android
  • Passing multiple data between activities in Android
  • Passing array between activities in Android
  • Passing ArrayList between activities in Android
  • Passing ArrayList to another activity in Android
  • Sending data via Intent in Android
  • Sending multiple data via Intent in Android
  • Sending array between activities in Android
  • Sending ArrayList between activities in Android
  • Sending ArrayList to another activity in Android
  • Sending data via Intent and Bundle in Android
  • Sending multiple data via Intent and Bundle in Android
  • Passing array between activities in Android using Intent and Bundle
  • How to pass array to another activity in Android?
  • How to pass array between activities in Android?
  • How to pass data to another activity in Android?
  • How to pass data to activity in Android?
  • How to pass data to between activities in Android?
  • How to pass ArrayList to another activity in Android?
  • How to pass ArrayList between activities in Android?

 

Code for passing data between activities in Android :

ActivityOne.java


String value = "Hello!";
Intent in = new Intent(this,ActivityTwo.class);
in = putExtra("Key", value);
startActivity(in);

ActivityTwo.java


Bundle bundle = getIntent().getExtras();
String valueReceived = bundle .getString("Key");

 

Code for passing multiple data or values between activities in Android :

Method 1 : Using Intent to pass data and Bundle to extract data between activities in Android

ActivityOne.java


String value1 = "Hello!";
String value2 = "Hi!";
Intent in = new Intent(this,ActivityTwo.class); 
in = putExtra("Key1", value1); startActivity(in); 
in = putExtra("Key2", value2); startActivity(in); 

ActivityTwo.java

Bundle bundle = getIntent().getExtras();
String valueReceived1 = bundle .getString("Key1");
String valueReceived2 = bundle .getString("Key2");

 

Method 2 : Using Bundle to pass and to extract data between activities in Android

ActivityOne.java


String value1 = "Hello!";
String value2 = "Hi!";
Intent in = new Intent(this,ActivityTwo.class); 
Bundle bundle = new Bundle();
bundle.putString("Key1", value1);
bundle.putString("Key2", value2);
in = putExtras(bundle); 
startActivity(in); 

ActivityTwo.java

Bundle bundle = getIntent().getExtras();
String valueReceived1 = bundle .getString("Key1");
String valueReceived2 = bundle .getString("Key2");

 

Code for passing array between activities in Android :

ActivityOne.java

String[] array = new String[]{"Item1", "Item2", "item3", "Item4", "item5"};
Intent in = new Intent(this,ActivityTwo.class); 
Bundle bundle = new Bundle();
bundle.putStringArray("MyArray", array);
in = putExtras(bundle); 
startActivity(in); 

ActivityTwo.java

Bundle bundle = getIntent().getExtras();
String arrayReceived[] = bundle.getStringArray("MyArray");

 

Code for passing ArrayList between activities in Android :

ActivityOne.java

ArrayList<String> array = new ArrayList<String>();
array.add("Hello");
array.add("Hi");
array.add("Bye");
Intent intent = new Intent(this, ActivityTwo.class);
intent.putExtra("array_list", array);
startActivity(intent);

ActivityTwo.java

Bundle bundle = getIntent().getExtras();
ArrayList<String> array = (ArrayList<String>) bundle.getStringArrayList("array_list");


		
Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Objectives :

  • Write a Java program to find prime number upto N number
  • Write a Java program to print prime number upto N number
  • Write a Java program to find prime number upto N number using Command Line Arguments
  • Write a Java Program to find prime number upto N number via Command Line Arguments
  • Write a Java program to find prime number upto N number using Scanner class

 

Java Program / Code :

Method 1 : Java Program to find Prime Number upto N number using Scanner class


import java.util.Scanner;
class PrimeNumber
{
public static void main(String[] args)
{
int n,p;
Scanner s=new Scanner(System.in);
System.out.println(“Enter number : ”);
n=s.nextInt();
for(int i=2;i<n;i++)
{
p=0;
for(int j=2;j<i;j++)
{
if(i%j==0)
p=1;
}
if(p==0){
System.out.println(i);
}
}
}
}

Method 2 : Java Program to find Prime Number upto N number using Scanner class and writing function to find prime number

Method isPrime() for checking if a number is prime or not

public class PrimeNumber{
 public boolean isPrime(int num) {
 if ( num < 2 ){
 return false;
 }
 for (int i = 2; i <= Math.sqrt(num); i++) {
 if ( num % i == 0 ) {
 return false;
 }
 }
 return true;
 }
}


// Mock Test Class to test above code
import java.util.Scanner;

public class Demo
{
 public static void main(String[] args) 
 {
 Scanner scanner = new Scanner(System.in);

 System.out.println("Please enter a number: ");
 int num = scanner.nextInt();
 
 if ( num < 2 ) {
 System.out.println("\n There are no Prime Numbers available");
 System.exit(0);
 }
 System.out.println("\n Prime Numbers from 1 to "+ num);
 PrimeNumber primeNum = new PrimeNumber();

 for (int i = 3; i <= num; i++) {
 if ( primeNum.isPrime(i) ) {
 System.out.print(", " + i);
 }
 }
 } 
}

Method 3 : Java Program to find Prime Number upto N number using Command line input


class PrimeNumber
{
public static void main(String[] args)
{
int n,p;
n=Integer.parseint(args[0]);
for(int i=2;i&lt;n;i++)
{
p=0;
for(int j=2;j&lt;i;j++)
{
if(i%j==0)
p=1;
}
if(p==0){
System.out.println(i);
}
}
}
}

Steps to run above program via command line :

  1. Compilation : C:\JavaPrograms>javac PrimeNumber.java
  2. Interpretation : C:\JavaPrograms>java PrimeNumber 20

Output :

2

3

5

7

11

13

17

19

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Objectives :

  • Write a program to compute sum of digits of a given number.
  • Write a program to find sum of digits of a given number.
  • Write a program to calculate sum of digits of a given number.
  • Write a program to compute sum of digits of a given integer number.
  • Write a program to compute sum of digits of a number entered via Command Line.
  • Write a program to compute sum of digits of a given number. Take input from Command Line.
  • Write a program to compute sum of digits of a given number. Take input using Scanner class.

Following is the Java Program to compute Sum of Digits of a given integer number;

Method 1 : Java Program to find Sum of Digits when number is entered from command line


class SumOfDigits
{
public static void main(String args[])
{
int n;
int a=0;
int sum=0;

//taking integer number from command line and parsing the same
n=Integer.parseInt(args[0]);

while(n!=0)
{
a=n%10;
n=n/10;
sum=sum+a;
}
System.out.println("Sum of digits: " + sum);
}
}

Steps to run above program via command line :

  1. Compilation : C:\JavaPrograms>javac SumOfDigits.java
  2. Interpretation : C:\JavaPrograms>java SumOfDigits 12345

Output : Sum of digits: 15

Method 2 : Java Program to find Sum of Digits if input is taken using Scanner class


import java.util.Scanner;

public class SumOfDigits {
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
int n;
int a=0;
System.out.print("Enter a positive number: ");
n = in.nextInt();

if (n <= 0)
System.out.println("You have entered a negative number.");
else {
int sum = 0;

while (n != 0) {

a=n%10;
n=n/10;
sum=sum+a;
}
System.out.println("Sum of digits: " + sum);
}
}
}

Steps to run above program via command line :

  1. Compilation : C:\JavaPrograms>javac SumOfDigits.java
  2. Interpretation : C:\JavaPrograms>java SumOfDigits 12345

Output :

Trial 1 : With positive number

Enter a positive number: 12345

Sum of digits: 15

Trial 2 : With negative number

Enter a positive number: -12345

You have entered a negative number.


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Atul Palandurkar

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