How to use simple String array in java

import java.util.*;
public class SimpleArray {

    public static void main(String[] Dx) {
        // TODO Auto-generated method stub
       
        String[] name = new String[5];
        name[0]="Dx ";
        name[1]="RAvi ";
        name[2]="Mitul";
        name[3]="Brijesh";
        name[4]="Dhaval";
       
       
        for(int i=0;i<5;i++)
        {
        System.out.println(" "+name[i]);

        }
    }
}

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