Java Bytecode - Support For Dynamic Languages

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:

    “If only I had a wife!” I used to think, “who could stay home and keep the children happy, why I could support six of them. A cinch.”
    Brenda Ueland (1891–1985)

    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)

    No doubt, to a man of sense, travel offers advantages. As many languages as he has, as many friends, as many arts and trades, so many times is he a man. A foreign country is a point of comparison, wherefrom to judge his own.
    Ralph Waldo Emerson (1803–1882)