Java Virtual Machine Specification Java SE 7 Edition 3rd Edition

Gain an in-depth understanding of the Java SE 7 JVM spec: sophisticated technical knowledge for implementing Java SE 7 bytecode interpreters or Java compilers, and optimizing Java program performance and efficiency. Authored by original members of the team that created the Java Virtual Machine at Sun, and fully updated by Oracle Java SE 7 spec lead Alex Buckley, The Java Virtual Machine Specification, Java SE 7 Edition offers an exceptionally thorough look at the Java platform's inner workings. Developers will find in-depth discussions of the JVM instruction set, with detailed examples showing how to compile Java code to it. Buckley and his colleagues illuminate the vital topic of Java virtual machine threads and their interaction with memory; and thoroughly discuss how interactions amongst program elements such as objects, variables, data types, arrays, exceptions and threads impact compile and run time. The authors explain the JVM's binary .class format, showing how Java interpreters should verify .class files' validity and trustworthiness, and carry out loading and linking operations on the objects they define. Part II offers a comprehensive reference to all Java opcodes: their purposes, formats, accepted operands, and the exceptions they can throw during compilation and execution.

The book provides complete, accurate, and detailed coverage of the Java Virtual Machine. It fully describes the invokedynamic instruction and method handle mechanism added in Java SE 7, and gives the formal Prolog specification of the type-checking verifier introduced in Java SE 6. The book also includes the class file extensions for generics and annotations defined in Java SE 5.0, and aligns the instruction set and initialization rules with the Java Memory Model.

The book provides complete, accurate, and detailed coverage of the Java Virtual Machine. It fully describes the invokedynamic instruction and method handle mechanism added in Java SE 7, and gives the formal Prolog specification of the type-checking verifier introduced in Java SE 6. The book also includes the class file extensions for generics and annotations defined in Java SE 5.0, and aligns the instruction set and initialization rules with the Java Memory Model.

The book provides complete, accurate, and detailed coverage of the Java Virtual Machine. It fully describes the invokedynamic instruction and method handle mechanism added in Java SE 7, and gives the formal Prolog specification of the type-checking verifier introduced in Java SE 6. The book also includes the class file extensions for generics and annotations defined in Java SE 5.0, and aligns the instruction set and initialization rules with the Java Memory Model.

Frank Yellin is a former Staff Engineer at Sun Microsystems. He was an original member of the Java project and spent a decade working on runtime systems for interpreted and compiled languages. Prior to Sun, he worked on the compilation of Common Lisp at Lucid. He holds an A.B. in Applied Mathematics from Harvard and an M.S. in Computer Science from Stanford.

Gilad Bracha is the creator of the Newspeak programming language and a former Distinguished Engineer at Sun Microsystems. Prior to Sun, he worked on Strongtalk, the Animorphic Smalltalk System. He holds a Ph.D. in Computer Science from the University of Utah.

Alex Buckley is the Specification Lead for the Java programming language and the Java Virtual Machine at Oracle. He holds a Ph.D. in Computing from Imperial College London.

Preface to the First Edition         xvii

Chapter 1: Introduction          1

1.1  A Bit of History   1

1.2  The Java Virtual Machine   2

1.3  Summary of Chapters   3

1.4  Notation   4

Chapter 2: The Structure of the Java Virtual Machine         5

2.1    The class File Format   5

2.2    Data Types   6

2.3    Primitive Types and Values   6

2.4    Reference Types and Values   11

2.5    Run-Time Data Areas   11

2.6    Frames   15

2.7    Representation of Objects   19

2.8    Floating-Point Arithmetic   19

2.9    Special Methods   22

2.10  Exceptions   23

2.11  Instruction Set Summary   25

2.12  Class Libraries   37

2.13  Public Design, Private Implementation   37

Chapter 3: Compiling for the Java Virtual Machine          39

3.1    Format of Examples   39

3.2    Use of Constants, Local Variables, and Control Constructs   40

3.3    Arithmetic   45

3.4    Accessing the Run-Time Constant Pool   46

3.5    More Control Examples   47

3.6    Receiving Arguments   49

3.7    Invoking Methods   50

3.8    Working with Class Instances   53

3.9    Arrays   55

3.10  Compiling Switches   57

3.11  Operations on the Operand Stack   58

3.12  Throwing and Handling Exceptions   59

3.13  Compiling finally   63

3.14  Synchronization   66

3.15  Annotations   67

Chapter 4: The class File Format          69

4.1   The ClassFile  Structure   70

4.2   The Internal Form of Names   75

4.3   Descriptors and Signatures   76

4.4   The Constant Pool   82

4.5   Fields   95

4.6   Methods   97

4.7   Attributes   100

4.8   Format Checking   140

4.9   Constraints on Java Virtual Machine code   140

4.10  Verification of class  Files   148

4.11  Limitations of the Java Virtual Machine   334

Chapter 5: Loading, Linking, and Initializing          337

5.1  The Run-Time Constant Pool   337

5.2  Java Virtual Machine Startup   340

5.3  Creation and Loading   340

5.4  Linking   347

5.5  Initialization   359

5.6  Binding Native Method Implementations   362

5.7  Java Virtual Machine Exit   362

Chapter 6: The Java Virtual Machine Instruction Set          363

6.1   Assumptions: The Meaning of "Must"   363

6.2   Reserved Opcodes   364

6.3   Virtual Machine Errors   364

6.4   Format of Instruction Descriptions   365

6.5   Instructions   368

Chapter 7: Opcode Mnemonics by Opcode         565

Index         569

Appendix A: Limited License Grant         587