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The Java bytecode is generated from languages running on the Java Platform, most notably the Java programming language. Note that any referenced "value" refers to a 32-bit int as per the Java instruction set.
For Integers, the unsigned modifier defines the type to be unsigned. The default integer signedness outside bit-fields is signed, but can be set explicitly with signed modifier. By contrast, the C standard declares signed char, unsigned char, and char, to be three distinct types, but specifies that all three must have the same size and alignment.
Unsigned integer Signed integer Ada: modulo the type's modulus: raise Constraint_Error: C, C++: modulo power of two: undefined behavior C#: modulo power of 2 in unchecked context; System.OverflowException is raised in checked context [10] Java: modulo power of two (char is the only unsigned primitive type in Java) modulo power of two JavaScript
Some features like operator overloading or unsigned integer data types are omitted to simplify the language and avoid possible ... (2-byte) 0: int: java.lang.Integer:
Shift an integer left (shifting in zeros), return an integer. Base instruction 0x63 shr: Shift an integer right (shift in sign), return an integer. Base instruction 0x64 shr.un: Shift an integer right (shift in zero), return an integer. Base instruction 0xFE 0x1C sizeof <typeTok> Push the size, in bytes, of a type as an unsigned int32.
Unsigned: From 0 to 15, which equals 2 4 − 1 1.2 8 byte, octet, i8, u8 Signed: From −128 to 127, from −(2 7) to 2 7 − 1 2.11 ASCII characters, code units in the UTF-8 character encoding: int8_t, signed char [b] sbyte: Shortint: byte: tinyint: INTEGER [c] byte: i8: Unsigned: From 0 to 255, which equals 2 8 − 1 2.41 uint8_t, unsigned ...
Protocol Buffers (Protobuf) uses the same encoding for unsigned integers, but encode signed integers by prepending the sign as the least significant bit of the first byte. ASN.1 BER, DER Encode values of each ASN.1 type as a string of eight-bit octets
Java bytecode is used at runtime either interpreted by a JVM or compiled to machine code via just-in-time (JIT) compilation and run as a native application. As Java bytecode is designed for a cross-platform compatibility and security, a Java bytecode application tends to run consistently across various hardware and software configurations. [3]