How to use Hashset in java

public class HashsetExample {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        HashSet<String> name=new HashSet<String>();
        name.add("Dx");
        name.add("Ravi");
        name.add("mitul");
        name.add("Dhaval");
        name.add("Bittu");
       
        Iterator<String> it=name.iterator();
        while(it.hasNext())
        {
            System.out.println(it.next());
        }
    }

}

How to use Hashmap in java

import java.util.HashMap;
import java.util.Map;


public class HashmapExample {

    public static void main(String[] args) {

      HashMap<Integer, String> name=new HashMap<Integer, String>();
      name.put(1001,"Dx");
      name.put(1002,"Ravi");
      name.put(1003,"Mitul");
      name.put(1004,"Bittu");
      name.put(1005,"Dhaval");
     
      for(Map.Entry m:name.entrySet())
      {
          System.out.println(m.getKey()+"  "+m.getValue());
         
      }
    
    }

}

how to How to use ArrayList in java

import java.util.ArrayList;


public class ArrayListExample {

    public static void main(String[] args) {
   
        ArrayList<String> name=new ArrayList<String>();
        name.add("Dx");
        name.add("Ravi");
        name.add("mitul");
        name.add("Dhaval");
        name.add("Bittu");
               
      
            System.out.println(name);        
      
     
    }

}

How to Create Ratinbar and get value in program in Android

Let's I m going to create Simple Android Application

which work with RatingBar and display Value in Message.


Screenshot:

activity_main.xml file code:


<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <RatingBar
        android:id="@+id/ratingBar1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="25dp"
        android:layout_marginTop="102dp" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/ratingBar1"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="62dp"
        android:layout_marginTop="38dp"
        android:text="Give Star"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/textView1"
        android:layout_centerVertical="true"
        android:text="Check" />

</RelativeLayout>



Mainactivity.java file code:

 package com.example.ratingbarsam;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.Toast;

public class MainActivity extends Activity {

  
    float ratingByUser;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    final RatingBar rtbar=(RatingBar) findViewById(R.id.ratingBar1);
    Button btn=(Button) findViewById(R.id.button1);
  
  
   rtbar.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
  
    @Override
    public void onRatingChanged(RatingBar arg0, float rating, boolean arg2) {
        // TODO Auto-generated method stub
        ratingByUser=rating;
    }
});
  
  
    btn.setOnClickListener(new OnClickListener() {
      
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
              Toast.makeText(getApplicationContext(),
                      "User Rating  " + ratingByUser, Toast.LENGTH_SHORT)
                      .show();

      
        }
    });
  
    }


  
}





 

Thanks you to visit Enjoy.......

How to Create Radio Button as selecting Male Female

Today i m going to create Simple Android Application

which perform Radio Button with selecting gender Male

and Female :


Screenshot:
                   

activity_main.xml file code:


    <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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="76dp"
        android:layout_marginTop="16dp"
        android:text="Select Gender"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <RadioGroup
        android:id="@+id/radioGroup1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="36dp"
        android:orientation="horizontal"
        >

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Male" />
   

    <RadioButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/radioGroup1"
        android:layout_below="@+id/radioGroup1"
        android:text="Female" />
   
   
      </RadioGroup>
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_centerVertical="true"
        android:text="Check Gender" />

</RelativeLayout>



 Mainactivity.java file code:



package com.example.radiobuttonprg;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class MainActivity extends Activity {
   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
  
    final RadioGroup rbg=(RadioGroup) findViewById(R.id.radioGroup1);
   
    Button btn=(Button) findViewById(R.id.button1);
   
    btn.setOnClickListener(new OnClickListener() {
       
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
           
            int selected=rbg.getCheckedRadioButtonId();
            RadioButton gender=(RadioButton) findViewById(selected);
            Toast.makeText(getApplicationContext(),gender.getText(),5000).show();
        }
    });
    }


  
}




Thanks you to visit Enjoy.......



 

How to get Text from editText and Display in Textview in Android

Step 1:
               Create one new Android Application Project named as MyTest

Step 2:
             Take elements 1)Textview  2)EditText 3)Button As below Picture

        

Step 3:
                now open MainActivity.java file

              (Location  in folder src>com.example.MyTest>MainActivity.java)

             code as below

             package com.example.mytest;

             import android.os.Bundle;
             import android.app.Activity;
             import android.view.Menu;
             import android.view.View;
             import android.view.View.OnClickListener;
             import android.widget.Button;
             import android.widget.EditText;
             import android.widget.TextView;

            public class MainActivity extends Activity {

           @Override
           protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
   
           final TextView lbl=(TextView) findViewById(R.id.textView1);
           final EditText edtxt=(EditText) findViewById(R.id.editText1);
           Button btn=(Button) findViewById(R.id.button1);
       
       
           btn.setOnClickListener(new OnClickListener() {
           
                 @Override
                 public void onClick(View arg0) {
               
                      String str=edtxt.getText().toString();
                   lbl.setText(str);
               
                }
              });
   
 
   
         }

   

   }
 

Step 4:
                Now run your Application in Emulater

How to know the ip location as geomatric Map

You first conform ip address then enter this ip into the

below link address

Click here

or open         http://www.geoiptool.com/   this site

or use below link

http://www.ip-adress.com/ip_tracer/