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Should Log Instances Be Static or Not?

Language: Java, Level: Beginner: - See why it is a good idea to store the log instance in a static final variable.

How to Check Whether a Number Is Prime

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?

Language: Java, Expertise: Intermediate - Figure out whether or not your timezone supports Daylight Saving Time programmatically.

Understanding the Usage of getSuperclass Method on a Class Object

Language: Java, Expertise: Intermediate - See how to use the getSuperclass method on a class object in Java.

Assembling XML with String Operations

Language: Java, Expertise: Beginner - See why it's best to not assemble XML with string operations.

How to Diagnose Memory Leaks

Language: Java, Expertise: Intermediate - Memory leaks don't have to be hard/scary/tedious problems to solve if you follow these three simple steps.

Infinite Loop Using Java

Language: SQL, Expertise: Intermediate - Learn why the "while(true)" command is an easier way to achieve the same result.

Infinite Heap in Java

Language: Java, Expertise: Intermediate - Learn more about how to avoid memory issues in Java.

Why XML Parsers Often Are Not Very Useful

Language: Web, Expertise: Beginner - See why native XML parsing only works with the most simple XML documents.

List All Available Time Zones

Language: Java, Expertise: Intermediate - This code will be of help if you are developing an application that is based on time zones.

Usage of a Custom Ordinal in Enum

Language: Java, Expertise: Intermediate - Use this mechanism when you want to override the default ordinal with a custom ordinal.

Get the Attention of a User with a Beep

Language: Java, Expertise: Intermediate - Learn to use java.awt.Toolkit.getDefaultToolkit.beep(); to get the attention of a user.

Knowing the Temp Location in Your Environment

Language: Java, Level: Intermediate: - Learn how to find the temp location in your environment.

Time Zone Conversion

Language: Java, Expertise: Beginner - Learn how to avoid this common time zone conversion mistake.

How to Find the End of a File in Java

Language: Java, Expertise: Intermediate - Easily find the end of file that you are processing.

Interesting Java.lang.Math Class

Language: Java, Level: Intermediate: - Check out this interesting java.lang.math class.

Daemon Threads in Java

Language: Java, Level: Intermediate: - Did you know that execution of a Java program will continue only when there is at least one user thread running?

Using Calendar.getInstance()

Language: Java, Level: Beginner: - Learn why you should avoid using the Calendar.getInstance() in many instances.

Avoiding the HashMap Size Trap

Language: Java, Level: Beginner: - See how to avoid having the HashMap resize half way through the insertion.

Random Number Generation Using Java

Language: Java, Level: Intermediate: - Learn how to use the Random class available in the java.util package to generate random numbers.

Do Not Assume SimpleDateFormat Is Thread-safe

Language: Java, Level: Beginner: - Learn why it is important to remember that sharing a SimpleDateFormat requires proper synchronization.

Finding a Boolean that Is Part of an Input String

Language: Java, Level: Intermediate: - See how to find a boolean that is available as part of the input string.

Catching to Log in Java

Language: Java, Level: Beginner: - See why it is important to pass all required information along in the exception.

Learn Some Efficient Programming Practices

Language: Java, Level: Intermediate: - Avoiding null pointer exceptions is a good programming practice. Learn some more ways to avoid this pitfall.

Creating a Link to a File in Java

Language: Java, Level: Intermediate: - See how to crosslink files in Java so that you don't have to hunt for multiple files when changes are made to one.

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