Convert Julian Date to Normal Date in Android

In this post explain how to Convert Julian Date to Normal Date in android.


In this blog we will used  Indian Calender date formula.....
 Calendar calendar = Calendar.getInstance();
  calendar.setTime(date);

 Its  GregorianCalendar...........................................................
 Calendar cal = new GregorianCalendar();

activity_main.xml.
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/fragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
      >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/logoweb" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter Julian Date"
        android:layout_marginLeft="7dp" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="40dp"
        android:layout_margin="7dp"
        android:ems="10"
        android:paddingLeft="5dp"
        android:background="@drawable/register_cover" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="7dp"
        android:text="Get" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Normal Date"
        android:layout_marginLeft="7dp"
        android:layout_marginTop="40dp" />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="40sp"
        android:paddingLeft="5dp"
        android:ems="10"
        android:enabled="false"
        android:layout_margin="7dp"
        android:background="@drawable/register_cover" />
     
</LinearLayout>
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MainActivity.java
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package com.androidbeginner.testcode;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

@SuppressLint("ResourceAsColor")
public class MainActivity extends Activity {


@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getActionBar().setTitle("Get NormalDate");  
setContentView(R.layout.activity_main);

Button btn=(Button)findViewById(R.id.button1);
btn.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {

EditText textstyle1 = (EditText) findViewById(R.id.editText1);
EditText textstyle2 = (EditText) findViewById(R.id.editText2);
 

if((!textstyle1.getText().toString().equals("")) && (textstyle1.getText().length()==6)){

//get the string from edittesxt
String julianteda=textstyle1.getText().toString();
//then convert the string in normak date
String normalDate = null;

try {
normalDate = convertJulianToNormal(julianteda);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//set text in texedit text
textstyle2.setText(normalDate);

} else {
Toast.makeText(getApplication(), "Please enter 6 digit Julian date", Toast.LENGTH_LONG).show();
}
 

}
});
  
} 

public static String convertJulianToNormal(String dateStr)
throws ParseException {

Calendar cal = new GregorianCalendar();

cal.set(Calendar.YEAR, Integer.parseInt(dateStr.substring(0, 4)));
cal.set(Calendar.DAY_OF_YEAR, Integer.parseInt(dateStr.substring(4)));

Date parsedDate = cal.getTime();
return new SimpleDateFormat("mm-dd-yyyy").format(parsedDate);
}

}

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