Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Every business and every company needs feedback. The question is, why is this feedback so important to run a business?Let us look at some of the reasons why feedback is necessary for any good business:Honest feedback helps the business grow. Based on the feedback, the entrepreneurs make changes in their strategies and work towards making their products/services better. Online businesses rely more on the feedback because it is easy for a consumer to give brutally honest feedback on the website.It improves the customer experience/engagement. If you react to the customer feedback and solve the issue, that will give a positive ... Read More
The string representation for the signature object can be obtained using the method getString() in the class java.security.Signature. This includes information such as the object state, algorithm name etc. The method getString() requires no parameters and it returns the provider for the signature object.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo { public static void main(String[] argv) { try { Signature signature = Signature.getInstance("SHA256withRSA"); ... Read More
This example demonstrates How to Count Occurrences of Each Character in String 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 name when user click on button, it will check occurrence of letter in string and gives result in textview.Step 3 − Add the following code to ... Read More
The buffer attribute specifies the buffering characteristics for the server output response object.You may code value of "none" to specify no buffering so that the servlet output is immediately directed to the response object or you may code a maximum buffer size in kilobytes, which directs the servlet to write to the buffer before writing to the response object.To direct the servlet to write the output directly to the response output object, use the following −
The tag executes an SQL statement that does not return data; for example, SQL INSERT, UPDATE, or DELETE statements.AttributeThe tag has the following attributes −AttributeDescriptionRequiredDefaultsqlSQL command to execute (should not return a ResultSet)NoBodydataSourceDatabase connection to use (overrides the default)NoDefault databasevarName of the variable to store the count of affected rowsNoNonescopeScope of the variable to store the count of affected rowsNoPageExampleTo start with basic concept, let us create a simple table Employees table in the TEST database and create few records in that table as follows −Step 1Open a Command Prompt and change to the installation directory as follows ... Read More
The nanosecond of second for a particular LocalTime can be obtained using the getNano() method in the LocalTime 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 followsExample Live Demoimport java.time.*; public class Demo { public static void main(String[] args) { LocalTime lt = LocalTime.parse("23:15:30.53"); System.out.println("The LocalTime is: " + lt); System.out.println("The nanosecond is: " + lt.getNano()); } }outputThe LocalTime is: 23:15:30.530 The nanosecond is: 530000000Now let us ... Read More
You can use ORDER BY RIGHT() to ORDER BY last 2 character string.The syntax is as followsselect yourColumnName from yourTableName ORDER BY RIGHT(yourColumnName , 2);To understand the above syntax, let us create a table. The query to create a table is as followsmysql> create table OrderByLast2CharactersDemo -> ( -> CustomerId varchar(20), -> CustomerName varchar(20) -> ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into OrderByLast2CharactersDemo(CustomerId, CustomerName) values('John-98', 'John'); Query OK, 1 row affected (0.20 sec) mysql> insert into OrderByLast2CharactersDemo(CustomerId, CustomerName) values('Carol-91', ... Read More
The refreshRow() method of the ResultSet interface refreshes the current row with the most recent value in the database.rs.refreshRow()Assume we have a table named cricketers_data with 7 records as shown below:+----+------------+------------+---------------+----------------+-------------+ | ID | First_Name | Last_Name | Year_Of_Birth | Place_Of_Birth | Country | +----+------------+------------+---------------+----------------+-------------+ | 1 | Shikhar | Dhawan | 1981-12-05 | Delhi | India | | 2 | Jonathan | Trott | 1981-04-22 | CapeTown | SouthAfrica | | 3 | Lumara | Sangakkara | ... Read More
This example demonstrate about How to pass data from one fragment to another fragment in androidStep 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 fragments to pass the data between two fragments.Step 3 − Add the following code to src /MainActivity.java import android.os.Bundle; import android.support.v4.app.FragmentActivity; public class MainActivity extends FragmentActivity implements ... Read More
Let us first create a LinkedHashMap with key-value pair −Mapmap1 = new LinkedHashMap(); map1.put("1", "Jim"); map1.put("2", "David"); map1.put("3", "Tom"); map1.put("4", "Sam"); map1.put("5", "Steve");Let us now create another LinkedHashMap with key-value pair −Mapmap2 = new LinkedHashMap(); map2.put("6", "Katie"); map2.put("7", "John"); map2.put("8", "Kane"); map2.put("9", "Chris");Now, create a new List and store the keys in it for both the above Map −Listlist = new ArrayList(); list.addAll(map1.keySet()); list.addAll(map2.keySet());Example Live Demoimport java.util.ArrayList; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; public class Demo { public static void main(String[] args) { Mapmap1 = new LinkedHashMap(); map1.put("1", "Jim"); map1.put("2", "David"); ... Read More