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Following are the new features of JDBC:Makes JDBC calls: While using JDBC Java applications can make JDBC calls these calls submit SQL statements to the driver which in turn accesses the data from the database.Portability: JDBC provides wide level portability.Using JDBC you can request any type of queries from the database.You can use JDBC with different Java applications such like Java Applets, Java Servlets, Java Server Pages (JSPs). Enterprise JavaBeans (EJBs). To communicate with database.JDBC provides support for advanced datatypes such as BLOB, CLOB etc.Using JDBC you can set save points for database and layer you can rollback to desired ... Read More
This example demonstrate about How to get current Wi-Fi mac address 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 WIFI mac address.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView textView; ... Read More
The nanosecond of second for a particular LocalDateTime can be obtained using the getNano() method in the LocalDateTime class in Java. This method requires no parameters and it returns the nanosecond of second in the range of 0 to 999, 999, 999.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Demo { public static void main(String[] args) { LocalDateTime ldt = LocalDateTime.parse("2019-02-18T23:15:30.53"); System.out.println("The LocalDateTime is: " + ldt); System.out.println("The nanosecond is: " + ldt.getNano()); } }OutputThe LocalDateTime is: 2019-02-18T23:15:30.530 The nanosecond is: 530000000Now let ... Read More
The build() method of the DoubleStream.Builder class builds the stream. It transitions this builder to the built state.The syntax is as followsDoubleStream build()To use the DoubleStream.Builder class in Java, import the following packageimport java.util.stream.DoubleStream;The following is an example to implement DoubleStream.Builder build() method in Java:Example Live Demoimport java.util.stream.DoubleStream; public class Demo { public static void main(String[] args) { DoubleStream.Builder builder = DoubleStream.builder(); builder.add(34.5); builder.add(87.1); builder.add(35.6); builder.add(66.1); builder.add(36.8); builder.add(77.4); builder.add(88.2); builder.add(68.9); builder.build().forEach(System.out::println); } }Output34.5 87.1 35.6 66.1 36.8 77.4 88.2 68.9
A. SQLite is an in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. It is a database, which is zero-configured, which means like other databases you do not need to configure it in your system.SQLite engine is not a standalone process like other databases, you can link it statically or dynamically as per your requirement with your application. SQLite accesses its storage files directly.The URL to connect with SQLite database is jdbc:sqlite:test.db and, the driver class name to connect to it is org.sqlite.JDBC.Before you proceed with the example:Download latest version of sqlite-jdbc-(VERSION).jar from sqlite-jdbcrepository.Add downloaded jar file ... Read More
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 take() 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 ... Read More
Let us first create a table. Following is the query −mysql> create table insertOneToAnotherTable -> ( -> Value int -> ); Query OK, 0 rows affected (0.60 sec)Following is the query to insert some records in the table using insert command −mysql> insert into insertOneToAnotherTable values(100); Query OK, 1 row affected (0.08 sec) mysql> insert into insertOneToAnotherTable values(200); Query OK, 1 row affected (0.15 sec) mysql> insert into insertOneToAnotherTable values(300); Query OK, 1 row affected (0.13 sec) mysql> insert into insertOneToAnotherTable values(400); Query OK, 1 row affected (0.15 sec) mysql> insert into insertOneToAnotherTable ... Read More
In C++ the structure and class are basically same. But there are some minor differences. These differences are like below.The class members are private by default, but members of structures are public. Let us see these two codes to see the differences.Example#include using namespace std; class my_class { int x = 10; }; int main() { my_class my_ob; cout
Disjoint set is basically as group of sets where no item can be in more than one set. It supports union and find operation on subsets.Find(): It is used to find in which subset a particular element is in and returns the representative of that particular set.Union(): It merges two different subsets into a single subset and representative of one set becomes representative of other.Functions and pseudocodesBegin Assume k is the element makeset(k): k.parent = k. Find(x): If k.parent == k return k. else return Find(k.parent) Union ... Read More
You need to use ORDER BY clause to sort. The syntax is as follows −SELECT *FROM yourTableName ORDER BY yourColumnName='yourValue' DESC, yourIdColumnName;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table SortCertainValues -> ( -> Id int NOT NULL AUTO_INCREMENT, -> Name varchar(20), -> CountryName varchar(10), -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (1.36 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into SortCertainValues(Name, CountryName) values('Adam', 'US'); Query OK, 1 row ... Read More