Slide Show in Android

Step:- 1 Create Activity in your project
public class MainActivity extends Activity {
 ImageView  slide; //image view form layout
 Button playslide; //on click start play slide show;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

        playslide = (Button)findViewById(R.id.playslide);
playslide.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

   //first create array of all resource 

final int[] image = new int[]{R.drawable.audio_pause,R.drawable.audio_play,R.drawable.audio_replay,R.drawable.audio_seek,R.drawable.audio_stop};

 //create handel for update the User interface 

         final Handler handler = new Handler();

// create those can set the image to image view

final Runnable runnable = new Runnable() {@Override public void run() {slide.setImageResource(image[currentIndex% image.length]);currentIndex++;}};

//Create timer class for refresh image after some time iterval      

Timer task = new Timer();

         task.scheduleAtFixedRate(new TimerTask() {@Override public void run() {handler.post(runnable);}}, 0,4000);

}

});

}
}
Step: 2 create layout to display the image

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

 <ImageView
       android:id="@+id/slide"
       android:layout_below="@+id/playslide"
       android:layout_height="wrap_content"
       android:layout_width="wrap_content"
       android:paddingTop="100dp"
       android:src="@drawable/ic_launcher"
       android:layout_centerInParent="true"
       />
</RelativeLayout>

Singleton Deign Pattern

Step by Step Singleton Deign Pattern

 Step:-1 Create class can't access by out side the with help of constructor (so avoid the creation of object )
              so as below

      class DemoSingleton {
 
        private DemoSingleton(){
   
          }
    }
       
Step :-2 Then quick question in mind  how we get the object that class or use it . so create a class type variable of DemoSingleton type with private and static

   class DemoSingleton{
 
   private static DemoSingleton demosingleton;

   private DemoSingleton(){

  }

 }

Step :-3 Then create method who will create and check object is not more then on copy.

class DemoSingleton {

 private static DemoSingleton demosingleton;

  private DemoSingleton(){
}

public static DemoSingleton getDemoSingleton(){
     
   if(demosingleton== null){
   demosingleton=new DemoSingleton();
  }
 
return demosingleton;
}

}

Step:4 But it is not food full in case of multiple threading so we can modify some code

class DemoSingleton {

 private static DemoSingleton demosingleton;

  private DemoSingleton(){
}

public static DemoSingleton getDemoSingleton(){
 
    synchronized (DemoSingleton.class) {
if (demoSingleton == null) {
   if(demosingleton== null){
   demosingleton=new DemoSingleton();
  }
  }
}
return demosingleton;
}

}

Android Activity Life Cycle

Example of Depandecy Injection by Spring 2.5

Step by Step Demo Core java Spring Example 
1- create normal javaApllication and library for Spring 2.5 in project 
2 create sudhir.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <bean id="ob" class="com.scure.S"></bean>
</beans>
3-Create interface  method

public interface myInterface {
    public void addUser();

}

4-create class myClass
public class myClass implements myInterface{

    public void addUser() {
        System.out.println("hello");
    }
    
}


5-create mani class which have main mathod 

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;


public class N1 {
    public static void main(String arg[]){
  ApplicationContext ctx=new ClassPathXmlApplicationContext("imran.xml");
  securityinterfac ob=(securityinterfac)ctx.getBean("ob");
   ob.scure();
    }
}

Object Life Cycle

jdk 7 update String Switch

import java.util.Scanner;
class Abc {
  public static  void main(String[] ar){
Scanner sc=new Scanner(System.in);
System.out.println("Enter your choice ");
String ch=sc.next();
switch(ch){
 case "yes":
   System.out.println("yes");
break;
case "no":
System.out.println("no");
break;
default :
System.out.println(" i always ok");
}
}

}

How Create table by Hibernate

Step -1 Create hibernate.cfg.xml
Step-2 Create Class Student.java
import javax.persistence.id;
import javax.persistence.entity;
@Entity
class Student implements java.io.serializable {
 private String  id;
private String name:
  @Id
 public String getId(){
 return id;
}
 public String setId(String id)
{
 this.id=id;
}
 public String getName(){
 return Name;

}

 public String setName(String Name)

{
 this.Name=Name;

}
} 
Step 3 create Main.java
  
import org.hibernate.*; 

class Main{

public static void main(String[] arg){

AnnotatedConfiguration cf=new AnnotatedConfiguration();
 cf.configure();
cf.addAnnotatedClass(Student.Class);
new SchemaExport(cf).create(true,true);
 }


 }