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Before getting into example, we should know what service is in android. Service is going to do back ground operation without interact with UI and it works even after activity destroyThis example demonstrate about How to implementing start Foreground for a service.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken text view, when user click on text view, it will start startForeground().Step 3 ... Read More
This example demonstrate about How to use Abstract list in volley json array in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken text view to show Abstract list items.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.widget.TextView; import com.android.volley.Request; import com.android.volley.RequestQueue; import com.android.volley.Response; import com.android.volley.VolleyError; import com.android.volley.toolbox.StringRequest; import com.android.volley.toolbox.Volley; import org.json.JSONArray; ... Read More
The value of the specified field from the LocalDate can be obtained using the get() method in the LocalDate class in Java. This method requires a single parameter i.e. ChronoField that is required and it returns the value of the specified field from the LocalDate.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; import java.time.temporal.ChronoField; public class Main { public static void main(String[] args) { LocalDate ld = LocalDate.parse("2019-02-16"); System.out.println("The LocalDate is: " + ld); System.out.println("The DAY_OF_MONTH is: " + ld.get(ChronoField.DAY_OF_MONTH)); } }OutputThe LocalDate is: 2019-02-16 ... Read More
You can check the current number of connections to MongoDB with the help of the following syntax −var anyVariableName= db.serverStatus(); yourVariableName.connections;The second syntax is as follows −db.serverStatus().connections;To understand both the above syntaxes, let us see them one by one −Case 1 − The first query is as follows −> var checkCurrentNumberOfConnections = db.serverStatus() > checkCurrentNumberOfConnections.connections;The following is the output −{ "current" : 1, "available" : 999999, "totalCreated" : 1 }Case 2 − The second query is as follows −> db.serverStatus().connectionsThe following is the output −{ "current" : 1, "available" : 999999, "totalCreated" : 1 }
Multithreading is a specialized form of multitasking and a multitasking is the feature that allows your computer to run two or more programs concurrently. In general, there are two types of multitasking: process-based and thread-based.Process-based multitasking handles the concurrent execution of programs. Thread-based multitasking deals with the concurrent execution of pieces of the same program.A multithreaded program contains two or more parts that can run concurrently. Each part of such a program is called a thread, and each thread defines a separate path of execution.C does not contain any built-in support for multithreaded applications. Instead, it relies entirely upon the ... Read More
Before getting into example, we should know what PriorityBlockingQueue is. It is an unbounded queue and follows same order as priority queue. The main usage of priority blocking queue is, it going to handle out of memory error.This example demonstrate about How to use remove() in android PriorityBlockingQueueStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken a text view to show PriorityBlockingQueue elements.Step 3 − ... Read More
You can use LPAD() from MySQL to pad the beginning of a MySQL INT field with zeroes. Let us first create a table.mysql> create table paddingDemo -> ( -> Number int -> ); Query OK, 0 rows affected (0.49 sec)Following is the query to insert some records in the table using insert command −mysql> insert into paddingDemo values(78); Query OK, 1 row affected (0.14 sec) mysql> insert into paddingDemo values(560); Query OK, 1 row affected (0.17 sec) mysql> insert into paddingDemo values(888995); Query OK, 1 row affected (0.13 sec) mysql> insert into paddingDemo values(999994); ... Read More
Let us first crate an array −double[] arr = new double[5];Now, create Random class object −Random randNum = new Random();Now, fill the above array with random numbers −for (int i = 0; i < 5; i++) { arr[i] = randNum.nextInt(); }Example Live Demoimport java.util.Arrays; import java.util.Random; public class Demo { public static void main(String args[]) { double[] arr = new double[5]; Random randNum = new Random(); for (int i = 0; i < 5; i++) { arr[i] = randNum.nextInt(); } System.out.println("Random numbers = "+Arrays.toString(arr)); } }OutputRandom numbers = [-6.59888981E8, 1.141160731E9, -9.931249E8, 1.335266582E9, 8.27918412E8]
The offset of the first element of the buffer inside the buffer array is obtained using the method arrayOffset() in the class java.nio.DoubleBuffer. If the buffer backed by the array is read-only, then the ReadOnlyBufferException is thrown.A program that demonstrates this is given as follows −Example Live Demoimport java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { DoubleBuffer buffer = DoubleBuffer.allocate(5); buffer.put(4.5D); buffer.put(1.2D); buffer.put(3.9D); ... Read More
The last three clock cycles in the OUT 25H instruction is an example for IOW machine cycle. Waveforms for IOW machine cycle are shown in the figure below: The point to be noted that in an IOW machine cycle, Wand Z registers have identical 8-bit port address. There is also a definite advantage because of address duplication on the addresses ranging from A15-8 and AD7-0 when we are using 8755 (2K × 8 EPROM and two 8-bit ports) and 8155 which is a combination of 256 × 8 RAM, 3 Input Output ports, and 14-bit timer. We can form a 8085-based ... Read More