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This is a list of the instructions that make up the Java bytecode, an abstract machine language that is ultimately executed by the Java virtual machine. [1] The Java bytecode is generated from languages running on the Java Platform, most notably the Java programming language.
Java bytecode is the instruction set of the Java virtual machine (JVM), the language to which Java and other JVM-compatible source code is compiled. [1] Each instruction is represented by a single byte , hence the name bytecode , making it a compact form of data .
The java.nio.file package and its related package, java.nio.file.attribute, provide comprehensive support for file I/O and for accessing the file system. A zip file system provider is also available in JDK 7. The java.nio.file.LinkOption is an example of emulating extensible enums with interfaces. [6]
A Java class file is a file (with the .class filename extension) containing Java bytecode that can be executed on the Java Virtual Machine (JVM).A Java class file is usually produced by a Java compiler from Java programming language source files (.java files) containing Java classes (alternatively, other JVM languages can also be used to create class files).
A JVM language is any language with functionality that can be expressed in terms of a valid class file which can be hosted by the Java Virtual Machine. A class file contains Java Virtual Machine instructions (Java byte code) and a symbol table, as well as other ancillary information. The class file format is the hardware- and operating system ...
For example, to aid in debugging of minified code, by "mapping" this code to the original unminified source code instead. The original format was created by Joseph Schorr as part of the Closure Inspector minification project. [9] Version 2 and 3 of the format reduced the size of the map files considerably. [9]
It allows programs to use the same code to read input from both a terminal and a text file. In the ANSI X3.27-1969 magnetic tape standard, the end of file was indicated by a tape mark , which consisted of a gap of approximately 3.5 inches of tape followed by a single byte containing the character 0x13 (hex) for nine-track tapes and 017 (octal ...
(An example of the maximal run length occurring between codes can be seen in the example given above, where the code for the data "0010" ends with a zero and the code for the next data, "1101", begins with a zero, forming a run of two zeros at the junction of these two 5-bit codes.)