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Articles by karthikeya Boyini
Page 128 of 143
How to use pop() in android ConcurrentLinkedDeque?
Before getting into an example, we should know what ConcurrentLinkedDeque is, it is unbounded deque based on linked nodes. Multiple threads can access deque elements with safety.This example demonstrates about How to use pop() in android ConcurrentLinkedDequeStep 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 ConcurrentLinkedDeque elements.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; ...
Read MoreHow to use put() in android PriorityBlockingQueue?
Before getting into the example, we should know what PriorityBlockingQueue is. It is an unbounded queue and follows the same order as a priority queue. The main usage of priority blocking queue is, it going to handle out of memory error.This example demonstrates about How to use put() 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 text view to show PriorityBlockingQueue elements.Step ...
Read MoreHow to use remainingCapacity() in android LinkedBlockingDeque?
Before getting into the example, we should know what LinkedBlockingDeque is. It is implemented by Collection interface and the AbstractQueue class. It provides optional boundaries based on linked nodes. It going to pass memory size to a constructor and helps to provide memory wastage in android.This example demonstrates about How to use remainingCapacity() in android LinkedBlockingDequeStep 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 ...
Read MoreHow to use remove() in android ConcurrentLinkedQueue?
Before getting into an example, we should know what ConcurrentLinkedQueue is, it is an unbounded queue based on linked nodes. Multiple threads can access queue elements with safety. Elements travel based on queue strategy as FIFO and elements going to insert from a tail. It does not allow null values.This example demonstrates about How to use remove() in android ConcurrentLinkedQueueStep 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, ...
Read MoreHow to use remove() in android CopyOnWriteArraySet?
Before getting into the example, we should know what CopyOnWriteArraySet is. It is a thread-safe variant of ArrayList and operations add, set, and so on by making a fresh copy of the underlying array.This example demonstrates about How to use remove () in android CopyOnWriteArraySetStep 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 CopyOnWriteArraySet elements.Step 3 − Add the following ...
Read MoreSelect MySQL rows where column contains same data in more than one record?
Use MySQL JOIN to select MySQL rows where column contains same data in more than one record. Let us first create a table −mysql> create table DemoTable ( UserId int, UserName varchar(20) ); Query OK, 0 rows affected (0.54 sec)Insert records in the table using insert command −mysql> insert into DemoTable values(10, 'John'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(11, 'Sam'); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable values(12, 'Larry'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(13, 'David'); Query OK, 1 row affected (0.17 ...
Read MoreMySQL order by 0 first and then display the record in descending order?
In order to order by 0 first and then largest, you can use the below syntax −select *from yourTableName order by yourColumnName=0 DESC, yourColumnName DESC;Let us first create a table −mysql> create table DemoTable ( Value int ); Query OK, 0 rows affected (0.65 sec)Insert records in the table using insert command −mysql> insert into DemoTable values(90); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable values(0); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(0); Query OK, 1 row affected (0.12 ...
Read MoreJava Tuple setAt0() method for Unit class
The setAt0() method is used to set the Unit value in JavaTuples and a copy with a new value at index 0.Let us first see what we need to work with JavaTuples. To work with the Unit class in JavaTuples, you need to import the following package −import org.javatuples.Unit;Note − Steps to download and run JavaTuples program. If you are using Eclipse IDE to run Unit Class in Java Tuples, then Right Click Project ->Properties ->Java Build Path ->Add External Jars and upload the downloaded JavaTuples jar file.The following is an example −Exampleimport org.javatuples.Unit; public class Demo { public static void main(String[] ...
Read MoreCan I use InnoDB and MyISAM tables in a single database in MySQL?
Yes, you can use InnoDB and MyISAM tables in one database or combine both of them in a single database. This is the recommended way.Here is the demo of both MyISAM and InnoDB in a one database. The following is the database and both the table types InnoDB and MyISAM. The query to create a database is as follows −mysql> create database BothInnoDBandMyISAM; Query OK, 1 row affected (0.20 sec) mysql> use BothInnoDBandMyISAM; Database changedI have a database with name ‘BothInnoDBandMyISAM’.First the table has engine type InnoDB. The query to create a table with engine InnoDB is as follows −mysql> ...
Read MoreIs there a built-in function for week of the month in MySQL?
There is no standard function to get week of month in MySQL. You need to use the following syntax −SELECT WEEK(yourDateColumnName, 5) - WEEK(DATE_SUB(yourDateColumnName, INTERVAL DAYOFMONTH(yourDateColumnName) - 1 DAY), 5) + 1 AS anyAliasName FROM yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table FirstWeekOfMonth -> ( -> Id int NOT NULL AUTO_INCREMENT primary key, -> yourdate date -> ); Query OK, 0 rows affected (2.50 sec)Now you can insert some records in the table ...
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