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Java APIs

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Trigger a GET Request via the JDK 11 HttpClient API
by Octavia Anghel
Language: Java, Expertise: Intermediate - The JDK 11 HttpClient API is very flexible and intuitive. Check out this example of triggering a GET request and printing the response.
Get the Class-Level Annotation
by Octavia Anghel
Language: Java, Expertise: Intermediate - Learn how use the Java Reflection API to obtain all the annotations of a class.
Get the Abstract Methods of a Class
by Octavia Anghel
Language: Java, Expertise: Intermediate - Learn to isolate the abstract methods from a class with the Java Reflection API.
Avoid Poor Use of Reflection
by Octavia Anghel
Language: Java, Expertise: Beginner - Learn more about why it is dangerous to create an instance of a class you don't know.
Getting All Available Time Zones in Java
by M S Sridhar
Language: Java, Expertise: Intermediate - Learn a quick way to get all of the available time zones in Java.
Identify Whether an IP Address Is a Multicast Address
by M S Sridhar
Language: Java, Expertise: Intermediate - Use this Java API to figure out whether or not an IP address is a multicast address.
Find the Hostname of a Server Using the IP Address
by M S Sridhar
Language: Java, Expertise: Intermediate - See how the Java.net package has an API that does the hard work of collecting all the details and returns the server name.
How to Check Whether a Number Is Prime
by M S Sridhar
Language: Java, Level: Intermediate: - Learn how to check if a number is prime using the isProbablePrime method in Java.
Does Your Timezone Support Daylight Saving Time?
by M S Sridhar
Language: Java, Expertise: Intermediate - Figure out whether or not your timezone supports Daylight Saving Time programmatically.
Get the Attention of a User with a Beep
by M S Sridhar
Language: Java, Expertise: Intermediate - Learn to use java.awt.Toolkit.getDefaultToolkit.beep(); to get the attention of a user.
Parsing and Converting Numbers in Java
by Octavia Anghel
Language: Java, Expertise: Intermediate - Learn how to use the API without allocating unnecessary objects.
Java Collections Performance, SET
by Octavia Anghel
Language: Java, Expertise: Intermediate - A set is a collection that contains no duplicate elements.
Java Collections Performance, LISTS
by Octavia Anghel
Language: Java, Expertise: Intermediate - A list is an ordered collection of elements.
Setting a JPA Hint in Spring
by Octavia ANghel
Language: Web, Expertise: Intermediate - Learn how to set a JPA hint in Spring.
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