Java Jdbc Connection String Examples Alvinalexander Com

Java JDBC connection string examples | alvinalexander.com.

Sep 03, 2019 . While I was digging through my old examples, I found JDBC connection string examples for other databases, and thought I'd share them all here. To that end, here are some example Java JDBC connection string examples for various databases, including MySQL, Postgres, SQL Server, and DB2. JDBC connection string examples.

https://alvinalexander.com/java/jdbc-connection-string-mysql-postgresql-sqlserver/.

A Scala JDBC connection and SQL SELECT example - alvinalexander.com.

Jan 24, 2021 . Scala JDBC FAQ: How can I use the Java JDBC API in my Scala application?. If you want to use a SQL database with your Scala applications, it's good to know you can still use the traditional Java JDBC programming library to access databases. I just ran a simple JDBC connection and SQL SELECT test, and everything seems to work just as it does in Java.. A ....

https://alvinalexander.com/scala/scala-jdbc-connection-mysql-sql-select-example/.

Java JDBC Insert Example: How to insert data into a SQL table.

Jul 08, 2020 . To help you understand how this process works, the following source code shows a complete Java program that creates a Connection to the database, and then inserts the data as shown previously: import java.sql.*; /** * JdbcInsert1.java - Demonstrates how to INSERT data into an SQL * database using Java JDBC..

https://alvinalexander.com/java/edu/pj/jdbc/jdbc0002/.

Java JDBC: A SQL SELECT query example | alvinalexander.com.

Jul 08, 2020 . Java JDBC FAQ: Can you share an example of a SQL SELECT query using the standard JDBC syntax?. In my JDBC connection article I showed how to connect your Java applications to standard SQL databases like MySQL, SQL Server, Oracle, SQLite, and others using JDBC.In those examples I showed how to connect to two different databases so you could see ....

https://alvinalexander.com/java/edu/pj/jdbc/jdbc0003/.

A Java MySQL DELETE example | alvinalexander.com.

Sep 30, 2019 . Here's a Java MySQL DELETE example, demonstrating how to issue a SQL DELETE command from your Java source code.. A simple MySQL database table. The first thing we'll need is an example MySQL database table to work with. To keep it simple -- but also show several different data types -- I created the following MySQL database table:.

https://alvinalexander.com/java/java-mysql-delete-query-example/.

Scala “split string” examples | alvinalexander.com.

Jul 28, 2022 . Scala String FAQ: How do I split a String in Scala based on a field separator, such as a string I get from a comma-separated value (CSV) or pipe-delimited file.. Solution. Use one of the split methods that are available on Scala/Java String objects:. scala> "hello world".split(" ") res0: Array[java.lang.String] = Array(hello, world) The split method returns an array of String ....

https://alvinalexander.com/scala/scala-split-string-example/.

A Java MySQL INSERT example (using Statement) - alvinalexander.com.

Sep 30, 2019 . Java MySQL FAQ: Can you share an example of a Java MySQL INSERT example using the Java Statement class?. Sure, with one caveat: I haven't used a Java Statement object with a Java SQL INSERT in many, many years. Every developer I know switched to using a Java PreparedStatement many years ago, as the syntax is much easier, and it also gets you away ....

https://alvinalexander.com/java/java-mysql-insert-example-statement/.

Scala: How to convert a String to an Int (Integer) - alvinalexander.com.

Mar 07, 2020 . That function returns the correct int value if the string can be converted to an int (such as "42"), and returns 0 if the string is something else, like the string "foo". A Scala "String to Int" conversion function that uses Option. A more "Scala like" way to write a string to int conversion function looks like this:.

https://alvinalexander.com/scala/how-cast-string-to-int-in-scala-string-int-conversion/.

A Java MySQL INSERT example (using PreparedStatement) - alvinalexander.com.

Sep 30, 2019 . Java MySQL INSERT example: Can you share a Java MySQL INSERT example, specifically using a Java PreparedStatement object?. Sure. As the question implies, you can use the Java Statement class to issue a MySQL INSERT statement, but the Java PreparedStatement class provides a much better way to insert data into a MySQL database table. (That being said, ....

https://alvinalexander.com/java/java-mysql-insert-example-preparedstatement/.

A Java MySQL SELECT example | alvinalexander.com.

Jul 08, 2020 . With a little example data in my database, I'm ready to write some Java/JDBC code. The Java source code. To perform a SQL SELECT query from Java, you just need to follow these steps: Create a Java Connection to the MySQL database; Define the SELECT statement; Execute the SELECT query, getting a Java ResultSet from that query.

https://alvinalexander.com/java/java-mysql-select-query-example/.

Scala number, date, and formatting examples | alvinalexander.com.

Nov 05, 2021 . This blog post contains a collection of Scala number and date examples. I created most of these in the process of writing the Scala Cookbook. Unlike the Cookbook, I don't describe the examples here much at all, I just show the examples, mostly as a reference for myself (and anyone else that can benefit from them). Scala numeric types.

https://alvinalexander.com/scala/scala-number-nnumeric-date-formatting-casting-examples/.

How to iterate over Scala Maps (for, foreach loop ... - alvinalexander.com.

Feb 15, 2021 . When using Java maps. If you're working with a Java Map, you'll need to use an import like this before you can use those techniques to work with the Java Map: import scala.collection.JavaConversions._ Once you do that you should be able to iterate over the map, print the map elements, etc. Iterating over a Scala Map - Summary.

https://alvinalexander.com/scala/create-iterating-scala-string-maps/.

A Scala current date and time example | alvinalexander.com.

Jun 29, 2022 . This code returns the current hour as a String. (I'm sure there are probably better ways to write this, but my writing time for today is up, so I'll have to leave the code like this for now.) More Scala SimpleDateFormat examples. While I'm in the neighborhood, I'll share the following Scala code, which shows a few more SimpleDateFormat ....

https://alvinalexander.com/scala/scala-get-current-date-time-hour-calendar-example/.

Scala best practice: How to use the Option/Some/None pattern.

Oct 12, 2021 . If x and y are String values like "1" and "2", this code works as expected, with answer resulting in an Int value. If x or y is a String that can't be converted to an Int, z will have this value: z: scala.util.Try[Int] = Failure(java.lang.NumberFormatException: For input string: "one") If x or y is null, z will have this value:.

https://alvinalexander.com/scala/best-practice-option-some-none-pattern-scala-idioms/.

How to create Maps in Scala (Scala Map class examples) - alvinalexander.com.

Dec 07, 2021 . This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 11.13, "How to Create Maps in Scala" Problem. You want to use a mutable or immutable Map in a Scala application.. Solution. To use an immutable map, you don't need an import statement, just create a Map:. scala> val states = Map("AL" -> "Alabama", "AK" -> ....

https://alvinalexander.com/scala/how-to-create-maps-class-examples-scala-cookbook/.

How to use the ‘filter’ method to filter a ... - alvinalexander.com.

Dec 07, 2021 . This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 10.17, "How to use filter to Filter a Scala Collection". Problem. You want to filter the items in a collection to create a new collection that contains only the elements that match your filtering criteria..

https://alvinalexander.com/scala/how-to-use-filter-method-scala-collections-cookbook/.

How to write an HTTP GET request client in Scala ... - alvinalexander.com.

Dec 26, 2020 . Under the covers, the Source.fromURL method uses classes like java.net.URL and java.io.InputStream, so this method can throw exceptions that extend from java.io.IOException. As a result, you may want to annotate your method to indicate that: @throws(classOf[java.io.IOException]) def get(url: String): String = ....

https://alvinalexander.com/scala/how-to-write-scala-http-get-request-client-source-fromurl/.

Database Operations in JavaFX with Complete Example!.

Sep 29, 2021 . In order to connect Oracle DB, we will use the JDBC driver. JDBC driver is a software component enabling a Java application to interact with a database. To add JDBC driver in our project: 1) Go to your project, right-click, and then click Open Module Settings..

https://www.swtestacademy.com/database-operations-javafx/.

How to add elements to a List in Scala (List, ListBuffer).

Jun 18, 2020 . Those examples show how to create a series of lists. The initial list named p1 contains one string, then p2 contains two strings, and finally p3 contains three strings. Prepending elements like this is exactly how the Scala List class is intended to be used. While that approach looks cumbersome in a small example, it makes sense in larger, real ....

https://alvinalexander.com/scala/how-add-elements-to-a-list-in-scala-listbuffer-immutable/.

Scala: How to loop over a collection with ‘for ... - alvinalexander.com.

Jan 06, 2020 . This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 3.1, "How to loop over a collection with for and foreach (and how a for loop is translated).". Problem. You want to iterate over the elements in a Scala collection, either to operate on each element in the collection, or to create a new collection from the existing ....

https://alvinalexander.com/scala/scala-for-loops-foreach-how-to-translated-by-compiler/.