The Java Native InterfaceProgrammer’s Guide and Specification phần 2 ppsx

... Thursday, February 21 , 20 02 4:36 PM Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com BASIC TYPES, STRINGS, AND ARRAYS Freeing Native String Resources 3 .2. 2 25 The Java_ Prompt_getLine ... prints out the existing value of the static field and then sets the field to a new value. To verify that the field has indeed changed, the pro- gram prints...

Ngày tải lên: 13/08/2014, 08:20

... http://www.simpopdf.com jni.book Page 2 Thursday, February 21 , 20 02 4:36 PM Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com The Java ™ Native Interface Programmer’s Guide and Specification Sheng ... Evolution of the JNI The need for Java applications to interoperate with native code has been recog- nized since the very early days of th...

Ngày tải lên: 13/08/2014, 08:20

... callback from native code (a native /Java callback) compare with the cost of calling a native method (a Java/ native call), and with the cost of calling a regular method (a Java/ Java call)? The answer ... reference and the other for the result returned from the method call. Next, it obtains the class reference from the object and looks up the method ID. D...

Ngày tải lên: 13/08/2014, 08:20

... convention and to accept two additional arguments (the JNIEnv pointer and the “this” pointer). 2. The stub converts between Java programming language types and native types. For example, the Java_ Win 32_ CreateFile ... library. Native applications can link against this library and use the invo- cation interface to load the Java virtual machine. Indeed, the stan...

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... Platform The current JDK and Java 2 SDK releases (1.1 and 1 .2) use peer classes internally to implement the java. io, java. net, and java. awt packages. An instance of the java. io.FileDescriptor class, ... of the object; 2) look up the field ID for i from the class reference; and 3) access the field value based on the object refer- ence and field ID: jni.book...

Ngày tải lên: 13/08/2014, 08:20

... characters, and so on, are copied between the Java virtual machine and native code. Objects, on the other hand, are passed jni.book Page 155 Thursday, February 21 , 20 02 4:36 PM Simpo PDF Merge and Split ... in the 1.1 and 1 .2 releases. Java 2 SDK release 1 .2 introduces a JNI_Onload func- tion, which can be defined by a native library to indicate the version o...

Ngày tải lên: 13/08/2014, 08:20

... than the ensured capacity. In Java 2 SDK release 1 .2, the programmer can supply the -verbose:jni command line option to turn on these warning messages. This function was introduced in Java 2 SDK ... are to be passed to the method immediately following the methodID argument. The Call<Type>Method function accepts these arguments and passes them to the method that...

Ngày tải lên: 13/08/2014, 08:20

... example, Java 2 SDK release 1 .2 supports -Xms and -Xmx options to allow programmers to specify the ini- tial and maximum heap size. Options that begin with “ -X”can be specified at the “ java command ... loaded. Support for the JNI_OnLoad hook is added in Java 2 SDK 1 .2. Linkage Exported from native libraries that contain native method imple- mentation. Parameters vm...

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... 26 4 NewShortArray, 26 6 NewString, 30, 26 8 NewStringUTF, 25 , 30, 26 9 NewWeakGlobalRef, 130, 27 0 NoClassDefFoundError, 76, 20 2, 21 5 NoSuchFieldError, 22 6, 23 3 NoSuchMethodError, 47, 22 8, 23 6, 27 3 O object ... 124 java. lang.Class, 20 2 java. lang.ClassLoader, 20 2 java. lang.Float, 121 java. lang.Integer, 121 java. lang.reflect package, 105 java. lang.reflect.C...

Ngày tải lên: 13/08/2014, 08:20

... read and understand. Compare the following IF statements: IF condition1 THEN | IF condition1 THEN statement1; | statement1; ELSE | ELSIF condition2 THEN IF condition2 THEN | statement2; statement2; ... of the loop, the condition is evaluated. If the condition is true, the sequence of statements is executed, then control resumes at the top of the loop. If the condition is...

Ngày tải lên: 07/08/2014, 11:22