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Deep understanding of Java Virtual Machine _ Chapter 2 _ Reading Notes and deep understanding of virtual machines 1. Contents of this chapter: Overview Data Area During Running Program counters Java Virtual Machine Stack Local method Stack Java heap Meth

Virtual Machine Linux ---- Ubuntu1404 ---- root login settings, ubuntu Virtual Machine root Password Note: After installing ubuntu 1404, you cannot see root logon by default. You also need to modify the configuration file, but the modified file is not the same as that of ubuntu 1204. 1. In the shell window, common us

Java Virtual Machine: runtime volume pool, Java Virtual Machine volume pool1. Introduction to the runtime frequent pool Runtime Constant Pool, which is part of the method area. In addition to the description of the version, field, method, and interface of the Class, the Class file also contains the Constant Pool Table

Java Virtual Machine command dup understanding, Java Virtual Machine dup For example: 1 public class ExceptionTest{2 3 void cantBeZero(int i) throws Exception{4 throw new Exception();5 6 }7 8 } The bytecode command after the above Code is compiled is as follows: 1 void cantBeZero(int) throws java.lang

Structure of class fileThere are two structures in Java's class file: unsigned numbers and tables. The smallest storage unit is 8 bytes.Unsigned numbers are the basic data types used to describe numbers, UTF-8 encoded strings, and index references.Represents a complex data structure that consists of multiple unsigned numbers.which Magic is the magic number, and the magic number takes up 4 bytes, what is the magic number to do? It actually means that the type of the file is a class file, no

void Sspin () { short i; for (i = 0; i ) { // }}Method void Sspin ()0 Iconst_0 int constant value 0 in-stack1 Istore_1 The value of the stack-top int into the specified local variable2 Goto 105 iload_1 the specified int type local variable into the stack6 Iconst_1 int constant value 1 in-stack7 Iadd stack top two int values are added, and the result is in the stack8 I2S Stack Top int value strong to short value, and result in stack9 Istore_1 The value of the stack-top int into the spe

Just discovered the new improvement, do not know whether has been outdated. Before we created the Windows Azure Virtual machine, Storage account could only choose use a automatically generated Storage account, as shown in the following figure: Once created, the storage Name is generated in the storage, as shown in the following figure: The name will be followed by the English and the number, memory m

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