Core Java
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Java 11: Converting a Collection to an Array
In Java 11, a new default method, toArray(IntFunction), has been added to the java.util.Collection interface, which allows the collection’s elements…
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Parsing Value from StreamCorruptedException: invalid stream header Message
It is a relatively common occurrence to see StreamCorruptedExceptions thrown with a “reason” that states, “invalid stream header” and then…
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Restarting Java’s Raw String Literals Discussion
It was announced in December 2018 that raw string literals would be dropped from JDK 12. Now, in the new year, discussion related…
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Compact Number Formatting Comes to JDK 12
JDK 12 Early Access Build 24 introduces support for Compact Number Formatting. The JDK-8188147 (Compact Number Formatting support) CSR‘s “Summary” is the simple…
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Java 11: Running single-file programs and “shebang” scripts
In Java 11, the java launcher has been enhanced to run single-file source code programs directly, without having to compile…
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A brief overview of the Fork/Join Framework in Java
Introduction The Fork/Join framework is a framework to solve a problem using a concurrent divide-and-conquer approach. They were introduced to…
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The Brief but Complicated History of JDK 12’s String::transform Method
It was recently proposed that the Java preview feature Raw String Literals (JEP 326) be removed from JDK 12 and…
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Java: Streaming a JDBC ResultSet as CSV
In my previous post, I showed how to convert a java.sql.ResultSet to JSON and stream it back to the caller.…
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Java 11: New HTTP Client API
In Java 11, the incubated HTTP Client API first introduced in Java 9, has been standardised. It makes it easier…
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