Java 15 text blocks4/18/2023 ![]() If you use the Socket and ServerSocket classes, you will automatically get the new implementation. The old, badly maintainable SocketImpl has been reimplemented by NioSocketImpl that does not depend on any native code. Translates escape sequences, like it’s done in text blocks. Removes all shared indentation from a String, exactly how it’s done in text blocks. Some Text Block behaviour is now also exposed by the API: String::stripIndent This instance method has the same behaviour as String.format(String s, Object… objects), but on the string instance itself. Some interesting API additions String::formatted(Object… objects) Java -enable-preview (classpath) (java jar or class file) To enable them, use the –enable-preview parameter: javac -enable-preview (classpath) (java source) The semantics and syntax of these features might change in a next version of Java. ![]() That’s a good thing, since break means breaking out of a control flow, and yield actually delivers a value.Īs said, these are preview features for evaluation by users. It is not allowed to use break in switch expressions and vice versa. The keyword break has been replaced with yield for switch expressions in Java 13, to clearly separate switch statements from switch expressions. In Java 12, a multi-statement expression branch would end in “ break ”.If not, you will get a compilation error. This means that every possible value of the input must be covered. A switch expression is an expression in the form of a switch statement that yields a value: In Java 13, Switch Expressions continue where Java 12 left off. You can still use escape characters like \r, \n etc.So, in the example above, the tag will be at “column 1” in the string. Indentation is determined by removing all indentation that is shared by all lines.So, in the example above, the closing element is still followed by a newline. The text Block ends at encountering three quotes.The Text Block starts after the opening delimiter of three quotes, followed by spaces and a line terminator.Text Blocks take away some of the previous pain: Remember messy String concatenation like this? ![]() Java 13 introduces the concept of Text Blocks. ![]() Please dive in, reading time is short, I promise! New language features Text Blocks (preview) This blog post gives an overview of what’s new in Java 13, and helps you decide if you should upgrade. Java 13 / JDK 13: General Availability: #jdk13 #java13 #openjdk #java On September 17 2019, Java 13 was released GA (General Availability). ![]()
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