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The length() method of the StringJoiner class in Java 8 is used to get the length of the current value of StringJoiner.To work with the StringJoiner in Java 8, import the following package:import java.util.StringJoiner;The syntax is as follows:public int length()First, create a StringJoiner:StringJoiner strJoin = new StringJoiner(", "); strJoin.add("US"); strJoin.add("India"); strJoin.add("Netherlands"); strJoin.add("Australia");Now, find the length of the StringJoiner i.e. the number of elements in it using the length() method:strJoin.length());The following is an example to implement StringJoiner length() method in Java:Example Live Demoimport java.util.StringJoiner; public class Demo { public static void main(String[] args) { // StringJoiner ... Read More
Device UDID stands for Unique device identifier. Every iOS Device has UDID which is a sequence of 40 letters and numbers that is guaranteed to be specific to your device.Device name is generally a name which will find in the device Setting→ General→ About.iOS Version is the version on which your current iPhone runs, latest iOS version in 12.2iOS Model describes whether the iOS device which user is using is an iPhone/iPad.Now will see how to detect UDID, Name, Version and Model programatically.Open Xcode → New Project and add the below code in ViewController’s viewDidLoad method.override func viewDidLoad() { ... Read More
You can use ENUM datatype for this. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, UserRating ENUM('1', '2', '3', '4', '5') ); Query OK, 0 rows affected (0.54 sec)Insert records in the table using insert command −mysql> insert into DemoTable(UserRating) values('5'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable(UserRating) values('3'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable(UserRating) values('1'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable(UserRating) values('3'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable(UserRating) values('4'); ... Read More
Running the program in Single-Step Mode:The single step mode is very useful for finding our program which has not yielded the desired outcomes after being executed in a single burst. We use it for program debugging. Similarly, like the operation to be executed singly ‘S’ is typed at the ‘>’ prompt. We can notice clearly that the change of address occurs after S. The given system clearly prompts which is stated below:The address of starting is: xxxx - yy/where the memory address is xxxx and the content of the located memory is yy which allows for responding the user ... Read More
RST7.5 pin is an input which is edge-sensitive. Peripherals uses it for sending a pulse, rather than a sustained high level, for the interruption of the processor. Internal to 8085 we have a flip-flop which gets connected to the interrupt pin RST7.5. We set this flip-flop to 1, when a positive-going edge occurs on the input RST 7.5. The waveform of pin RST7.5 and output Q of RST7.5 flip-flop is shown in the Fig.Internal interrupt signal RST7.5 has a priority higher than the internal interrupt signals of RST6.5, RST5.5 and INTR. As we can see from fig the RST7.5 internal interrupt ... Read More
Before getting into example, we should know what sqlite data base in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the relational database features. In order to access this database, you don't need to establish any kind of connections for it like JDBC, ODBC etc.This example demonstrate about How to encrypt pass word and store in Android sqliteStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required ... Read More
You need to use DateTime class if you want to extract the only date from datetime field. The syntax is as follows −DateTime::createFromFormat("Y-m-d H:i:s",yourDateTimeValue)->format("yourFormatSpecifier");Now you can implement the above syntax in your PHP code to extract the only date from datetime field. The PHP code is as follows −$MySQLDataBaseDateTime = "2018-02-13 13:10:15"; echo DateTime::createFromFormat("Y-m-d H:i:s",$MySQLDataBaseDateTime)->format("d/m/Y");Here is the screenshot of the PHP code −Output13/02/2018
The contains() method of the ArrayBlockingQueue class is used to search for an element in the queue. If the element exist in the queue, TRUE is returned.The syntax is as follows −boolean contains(Object ob)Here, ob is the element to be searched.To work with ArrayBlockingQueue class, you need to import the following package −import java.util.concurrent.ArrayBlockingQueue;The following is an example to implement contains() method of Java ArrayBlockingQueue class −Example Live Demoimport java.util.concurrent.ArrayBlockingQueue; public class Demo { public static void main(String[] args) throws InterruptedException { ArrayBlockingQueue q = new ArrayBlockingQueue(10); q.add(200); q.add(310); ... Read More
To clear console in MongoDB, you can use any of the following two syntaxes.The first syntax is as follows, which is the usage of keyboard shortcut −Ctrl + LAfter pressing the above key, you can clear console in MongoDB.The second syntax is as follows −clsTo understand the above syntaxes, let us implement them one by one. Here is the snapshot of my console.The first query is as follows to clear console in MongoDB −Ctrl+L;The following is the output −Look at the above sample output, the console has been cleared. Let us check the console once again.The second query is as ... Read More
Python pygmaps library provides a wrapper for the google maps javascript api. With this library python users can create a matplotlib like interface to generate the html and javascript and then can depicts all the additional information user’s would like to add on top of Google Maps.Required libraryWe are only going to use the pygmaps library/package. You can install the pygmaps library using pip, like:$pip install pygmaps (windows os) $sudo pip3 install pygmaps (linux os)We are going to write a program which will display -Create a map using pygmaps by providing long, lat & zoom level.Set grids on map by ... Read More