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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to create an Android notification with expiration date?
This example demonstrate about How to create an Android notification with expiration dateStep 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. Step 3 − Add the following code to src/MainActivity.package app.tutorialspoint.com.notifyme ; import android.app.AlarmManager ; import android.app.DatePickerDialog ; import android.app.Notification ; import android.app.PendingIntent ; import android.content.Context ; import android.content.Intent ; import android.os.Bundle ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; import android.widget.Button ; import android.widget.DatePicker ; import java.text.SimpleDateFormat ; import ...
Read MoreHow to set Palette Layer for JDesktopPane in Java?
At first, create a JDesktopPane −JDesktopPane desktopPane = new JDesktopPane();Now, create an Internal Frame −JInternalFrame intFrame = new JInternalFrame("Our Frame", true, true, true, true); intFrame.setBounds(50, 90, 200, 250);Set Pallette layer for JDesktopPane and add the Internal Frame to JDesktopPane −intFrame.putClientProperty("JInternalFrame.isPalette", Boolean.TRUE); desktopPane.add(intFrame, JDesktopPane.PALETTE_LAYER);The following is an example to set palette layer for JDesktopPane −package my; import java.awt.BorderLayout; import javax.swing.JButton; import javax.swing.JDesktopPane; import javax.swing.JFrame; import javax.swing.JInternalFrame; import javax.swing.JLabel; public class SwingDemo { public static void main(final String[] args) { JFrame frame = new JFrame("Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JDesktopPane desktopPane = new JDesktopPane(); ...
Read MoreHow to retrieve a DATALINK object from a table using JDBC?
A DATALINK object represents an URL value which refers to an external resource (outside the current database/data source), which can be a file, directory etc..You can retrieve a DATALINK object an SQL table using the getURL() method of the PreparedStatement interface. This method accepts an integer value representing an index of the column in the ResultSet and returns the URL object in the specified index.ExampleLet us create a table with name tutorials_data in MySQL database using CREATE statement as shown below −CREATE TABLE tutorials_data ( tutorial_id INT PRIMARY KEY AUTO_INCREMENT, tutorial_title VARCHAR(100), tutorial_author VARCHAR(40), submission_date date, ...
Read MoreHow to get time in milliseconds using C++ on Linux?
Here we will see how to get time (the elapsed time for the program or any other kind of time).Here we are using linux library for C++. There is a structure called timeval. This timeval stores the time in seconds, milliseconds. We can create two time for start and end, then find the difference from them.Example#include #include #include using namespace std; main() { struct timeval start_time, end_time; long milli_time, seconds, useconds; gettimeofday(&start_time, NULL); cout > ch; gettimeofday(&end_time, NULL); seconds = end_time.tv_sec - start_time.tv_sec; //seconds useconds = end_time.tv_usec - start_time.tv_usec; //milliseconds ...
Read MoreStart and stop an Android notification from broadcast receiver?
This example demonstrate about Start and stop an Android notification from broadcast receiverStep 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. Step 3 − Add the following code to src/MainActivity.package app.tutorialspoint.com.notifyme ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; public class MainActivity extends AppCompatActivity { @Override protected void onCreate (Bundle savedInstanceState) { super .onCreate(savedInstanceState) ; setContentView(R.layout. activity_main ) ; } }Step 4 − Add the following code ...
Read MoreHow to use GridBagConstraints to layout two components in the same line with Java
To align two components in the same line, you need to set the contrainsts of the GridBagConstraints properly. Let’s say we have two components in panel1. Set the contraints using Insets as well −panel1.add(checkBox1, new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0)); panel1.add(checkBox2, new GridBagConstraints(1, 0, 1, 1, 2.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));The following is an example to set two components in the same line −Examplepackage my; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import javax.swing.JCheckBox; import javax.swing.JFrame; import javax.swing.JPanel; public class SwingDemo { ...
Read MoreWrite a program to get the list of all the supported datatypes in JDBC?
The class named Types of the java.sql package contains the constants that represents the SQL datatypes. All these datatypes are represented by unique integer values.Retrieving the integer values from the Types classTo print all the class names and values of the constants in java.sql.Types class −Retrieve all the fields in Types class − The getFields() method of the class Class returns an array which holds all the fileds (public) of the class/interface represented by the current Class object.Using this method retrieve the array of fileds of the Types class as shown below −Field[] fields = java.sql.Types.class.getFields();Retrieve the name and value ...
Read MoreWhat is difference between instantiating a C++ object using new vs. without new?
In C++, we can instantiate the class object with or without using the new keyword. If the new keyword is not use, then it is like normal object. This will be stored at the stack section. This will be destroyed when the scope ends. But for the case when we want to allocate the space for the item dynamically, then we can create pointer of that class, and instantiate using new operator.In C++, the new is used to dynamically allocate memory.Example#include using namespace std; class Point { int x, y, z; public: Point(int x, ...
Read MoreGet the number of levels above a node in JTree with Java
To get the number of levels above a node, use the getLevel() method. Following is an example for the root node “node” −node.getLevel()Note − The value 0 is returned if the node is a root node since there are zero levels above the root node.For other nodes, get the number of levels above a node as shown below with node3 −node3.getLevel()The following is an example to get the number of levels above a node in a JTree −package my; import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; public class SwingDemo { public static void main(String[] args) throws Exception { ...
Read MoreAuto insert values into a MySQL table in a range?
For this, you can create a stored procedure. Let us first create a table.mysql> create table DemoTable -> ( -> Value int -> ); Query OK, 0 rows affected (0.55 sec)Following is the query to create a stored procedure to auto insert values to a table from range 10 to 20 −mysql> DELIMITER // mysql> CREATE PROCEDURE AutoInsertValuesToTable() -> BEGIN -> DECLARE startingRange INT DEFAULT 10; -> WHILE startingRange INSERT DemoTable(Value) VALUES (startingRange ); -> SET startingRange = startingRange + 1; -> ...
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