Support For Dynamic Languages
The Java Virtual Machine provides some support for dynamically typed languages. Most of the existing JVM instruction set is statically typed - in the sense that method calls have their signatures type-checked at compile time, without a mechanism to defer this decision to run time, or to choose the method dispatch by an alternative approach.
JSR 292 (Supporting Dynamically Typed Languages on the Java™ Platform) added a new invokedynamic instruction at the JVM level, to allow method invocation relying on dynamic type checking (instead of the existing statically type-checked invokevirtual instruction). The Da Vinci Machine is a prototype virtual machine implementation that hosts JVM extensions aimed at supporting dynamic languages. All JVMs supporting J2SE 7 also include the invokedynamic opcode.
Read more about this topic: Java Bytecode
Famous quotes containing the words support, dynamic and/or languages:
“... the outcome of the Clarence Thomas hearings and his subsequent appointment to the Supreme Court shows how misguided, narrow notions of racial solidarity that suppress dissent and critique can lead black folks to support individuals who will not protect their rights.”
—bell hooks (b. c. 1955)
“Knowledge about life is one thing; effective occupation of a place in life, with its dynamic currents passing through your being, is another.”
—William James (1842–1910)
“I am always sorry when any language is lost, because languages are the pedigree of nations.”
—Samuel Johnson (1709–1784)