Deep understanding of Java Virtual Machine-Chapter 2: deep understanding of Java Virtual Machine
Chapter 2 Java memory zone and memory overflow exceptions
Running data area
1. The Progr
Google launched the Android SDK at the end of 2007 as an important feature of the Android system, and the Dalvik virtual machine was the first to come into view. Its efficient use of memory and its high performance on low-speed CPUs are truly impressive. Relies on the underlying POSIX-compliant operating system, which can simply complete process isolation and thread management. Each Android app will have a
Java Virtual Machine class loading sequence, Java Virtual Machine Loading
When loading a class, the Java VM initializes the static variables of the parent class, initializes the static
Today began the actual combat Java Virtual Machine two: "Virtual machine working mode."Total of 5 Series
"Heap overflow processing" in one of the actual Java virtual machines
Deep understanding of Java Virtual Machine-Chapter 3: deep understanding of Java Virtual Machine
1. Overview
2. Is the object dead?
Reference Counter
Add a reference counter to the object. When there is a reference, add 1 to the c
We all know that Java virtual machines are used to run our compiled. class file, class file with all kinds of information, virtual confidential run these files, the first thing is to load into the virtual machine, which leads to this summary of the problem-how the
Error:could not create the Java Virtual machine.error:a Fatal exception have occurred,program would exit.The above error message appears as shown in:Then click OK to eject the following error messageWorkaround:1, determine whether the machine installed the Java environment. Specific methods online Search, here or give
Some people think that the Dalvik virtual machine is a Java virtual machine, because the Android programming language is exactly the Java language. However, this statement is not accurate, because the Dalvik
Since the work above, the program because the code more write more, become more and more bloated, the efficiency will become lower, so I always like to constantly optimize the program structure outside, memory optimization and performance tuning.To make memory optimizations and performance tuning for Java programs, you need to understand the internal principles of virtual machines and understand the benefit
Since the work, the more written code, the program is increasingly bloated, less efficient, for me such a pursuit of the perfect programmer, this is absolutely not allowed, so in addition to constantly optimize the program structure, memory optimization and performance tuning has become my usual "trick."
To perform memory optimization and performance tuning on Java programs, do not understand the internal principle of the
Today began the actual combat Java Virtual Machine two: "Virtual machine working mode."Total of 5 Series
"Heap overflow processing" in one of the actual Java virtual machines
Today began the actual combat Java Virtual Machine two: "Virtual machine working mode."Total of 5 Series
"Heap overflow processing" in one of the actual Java virtual machines
The first part goes into the Java1.java technology systemSun's officially defined Java technology System includes several components:
Java Program Set Language
Java virtual machines on a variety of hardware platforms
class file format
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