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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.

Using the "==" Operator with Double or Float

Language: Java, Level: Beginner: - Avoid causing and endless loop with float or double values in Java.

Clearing the Contents of a StringBuffer

Language: Java, Level: Intermediate: - StringBuffer is a class that facilitates string operations and also helps reduce memory usage.

Avoid NullPointerException in String Equality Comparison

Language: Java, Beginner: Intermediate - Learn why it's important to place literals first in equal comparisons.

Understanding the Long Data Type in Java

Language: Java, Expertise: Intermediate - See how Java long behaves differently when used with the letter L and without it.

Simple Annotation in Java

Language: Java, Expertise: Intermediate - Annotations are similar to interfaces in that you can convey your own specifications that others will need to follow.

Reducing Unbuffered Streams

Language: Java, Expertise: Intermediate - Learn how to significantly reduce the number of native calls.

Converting Numbers to Strings

Language: Java, Expertise: Beginner - Learn the right way to convert numbers to Strings.

Obtaining a Thread Dump of Your Java App in Linux

Language: Java, Expertise: Intermediate - Learn how to trigger a thread dump in Java on Linux os.

Reasons for Android Runtime Garbage Collection

Language: Java, Expertise: Advanced - See some suggestions regarding what could be triggering Garbage Collection in your Android run time environment.

Parsing and Converting Numbers in Java

Language: Java, Expertise: Intermediate - Learn how to use the API without allocating unnecessary objects.

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