denverj
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Nabulio：
是不错的
Java的Integer与int互转 -
shihengli2010：
学习了 ！Integer i = 100; Integer ...
Java的Integer与int互转 -
flex涵：
还可以，差不多就是这个意思.
Java的Integer与int互转 -
lijingshou：
相当好用。。。
输入年月日格式yyyyMMdd，判断是否是周末 -
denverj：
你好，是这本书的英文版，名字叫<Inside the J ...
JVM学习笔记-帧数据区(Frame Data)
文章列表
Attributes
The Java Virtual Machine specification defines eight types of attributes,
shown in Table 6-25. All Java Virtual Machine implementations must recognize
three of these attributes: Code, ConstantValue, and Exceptions. Implementations can choose whether to
recognize or ignore the ...
Attributes
As mentioned above, attributes appear in several places inside a Java class
file. They can appear in the ClassFile, field_info, method_info, and Code_attribute tables. The Code_attribute table, an attribute itself, is
described later in this section.
如前所述，属性在Java class文件中多处出现。 ...
Methods
Each method declared in a class or interface or generated by the compiler is
described in the class file by a method_info
table. The two types of compiler-generated methods that may appear in class
files are instance initialization methods (named <init) and class initializati ...
Each field (class variable and instance variable) declared in a class or
interface is described by a field_info table in
the class file. The format of the field_info
table is shown in Table 6-20.
在类或者接口中声明的每一个字段（类变量或者实例变量）都由class文件中的一个名为field_info的可变长度的表进行描述。在一个class文件中，不会存在两个具有相同名字和描述符的字段。 ...
What is a Java Class File?
The Java class file is a precisely defined binary file format for Java
programs. Each Java class file represents a complete description of one Java
class or interface. There is no way to put more than one class or interface into
a single class file. The pre ...
Special Strings 特殊字符串
The symbolic references contained in the constant pool involve three special
kinds of strings: fully qualified names, simple names, and descriptors. All
symbolic references include the fully qualified name of a class or interface.
Symbolic references to fields incl ...
本地方法栈（Native Method Stacks）与虚拟机栈所发挥的作用是非常相似的，其区别不过是虚拟机栈为虚拟机执行Java方法（也就是字节码）服务，而本地方法栈则是为虚拟机使用到的Native方法服务。虚拟机规范中对本地方法栈中的 ...
In addition to the local variables and operand stack, the Java stack frame
includes data to support constant pool resolution, normal method return, and
exception dispatch. This data is stored in the frame data portion of the
Java stack frame.
除了局部变量区和操作数栈外，Java栈帧还需要一些数据来支持常量池解析、正常方法返回以及异常派发 ...
Like the local variables, the operand stack is organized as an array of
words. But unlike the local variables, which are accessed via array indices, the
operand stack is accessed by pushing and popping values. If an instruction
pushes a value onto the operand stack, a later instruction can p ...
The local variables section of the Java stack frame is organized as a
zero-based array of words. Instructions that use a value from the local
variables section provide an index into the zero-based array. Values of type
int, float,
reference, and returnValue occupy one entry in the local ...
The stack frame has three parts: local variables, operand stack, and frame
data. The sizes of the local variables and operand stack, which are measured in
words, depend upon the needs of each individual method. These sizes are
determined at compile time and included in the class file data fo ...
与程序计数器一样，Java虚拟机栈（Java Virtual Machine Stacks）也是线程私有的，它的生命周期与线程相同。虚拟机栈描述的是Java方法执行的内存模型：每个方法被执行的时候都会同时创建一个栈帧（Stack Frame①）用于存储局部变量表、操作栈、动态链接、方法出口等信息。每一个方法被调用直至执行完成的过程，就对应着一个栈帧在虚拟机栈中从入栈到出栈的过程。
经常有人把Java内存区分为堆内存（Heap）和栈内存（Stack），这种分法比较粗糙，Java内存区域的划分实际上远比这复杂。这种划分方式的流行只能说明大多数程序员最关注的、与对象内存分配关 ...
程序计数器（Program Counter Register）是一块较小的内存空间，它的作用可以看做是当前线程所执行的字节码的行号指示器。在虚拟机的概念模型里（仅是概念模型，各种虚拟机可能会通过一些更高效的方式去实现），字节码解释器工作时就是通过改变这个计数器的值来选取下一条需要执行的字节码指令，分支、循环、跳转、异常处理、线程恢复等基础功能都需要依赖这个计数器来完成。
由于Java虚拟机的多线程是通过线程轮流切换并分配处理器执行时间的方式来实现的，在任何一个确定的时刻，一个处理器（对于多核处理器来说是一个内核）只会执行一条线程中的指令。因此，为了线程切换 ...
对于大多数应用来说，Java堆（Java Heap）是Java虚拟机所管理的内存中最大的一块。Java堆是被所有线程共享的一块内存区域，在虚拟机启动时创建。此内存区域的唯一目的就是存放对象实例，几乎所有的对象实例都在这里 ...
As an example of how the Java Virtual Machine uses the information it stores
in the method area, consider these classes:
为了展示虚拟机如何使用方法区中的信息，我们举个例子，看下面这个类：
begin
// On CD-ROM in file jvm/ex2/Lava.java
class Lava {
pri ...