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CharBuffer/DoubleBuffer/LongBuffer/ShortBuffer When you first look at these methods, you might wonder what they are used for? You can think of them like /dev/null for throwing away output you don’t need or providing an input that always returns zero bytes. java.io.InputStream/OutputStream/Reader/WriterĮach of the java.io.InputStream/OutputStream/Reader/Writer classes has a new method, respectively InputStreamnullInputStream(), OutputStreamnullOutputStream(), ReadernullReader(), and WriternullWriter() that reads or writes no bytes. The java.io.FileReader class has two new constructors and java.io.FileWriter has four new constructors that allow a Charset to be specified. java.io.FileReader and java.io.FileWriter The java.io.ByteArrayOutputStream has a new method, void writeBytes(byte), which writes all the bytes of the parameter to the output stream at once.
#COMPILING JAVA WITH JDK 12 CODE#
It is an overload for the existing method in the String class, but it takes an int Unicode code point instead of a char. The class has a new method: StringtoString(int). Let’s start with the new methods that have been added to all the classes that deal with strings, which we use in code every day.
#COMPILING JAVA WITH JDK 12 SERIES#
For more information about this technology, you might skip ahead and try the following tutorials in this series articles: JShell is an interactive REPL Java shell (read-eval-print-loop) that was added in Java 9. To illustrate the new APIs and methods, I’ll open a JShell session. I’ve separated the new features in Java SE 11 and 12 into two categories: APIs and methods, and language features.
![compiling java with jdk 12 compiling java with jdk 12](https://linuxhint.com/wp-content/uploads/2019/05/16.png)
Unless I’ve tagged a feature specifically for JDK 12, you can assume it will work in version 11.
![compiling java with jdk 12 compiling java with jdk 12](https://windows-cdn.softpedia.com/screenshots/Sun-Java-JDK_1.jpg)
Features that are visible to all developers (which are so useful, you’ll wonder how you coded without them).I’ve constructed this article with two main sections: Let me take you on an exploration of the most significant updates.
![compiling java with jdk 12 compiling java with jdk 12](https://javadoc.scijava.org/Java12/jdk.jshell/module-graph.png)
More in this series This content is part of the “ Java theory and practice” series.