JVM Tutorials - Herong's Tutorial Examples - v5.11, by Dr. Herong Yang
Outdated: Download and Install JDK 1.7.0 on Windows
This section provides a tutorial example on how to download and install JDK 1.7.0 (Java SE 7) on a Windows XP system. A simple Java program was entered, compiled, and executed with the new JDK installation.
Downloading and installing JDK 1.7.0 (Java SE 1.7) on a Windows system is easy. Here is what I did on my Windows 7 system:
To test the installation, open a command window to try the java command. If you are getting the following output, your installation was ok:
C:\herong>"\Program Files\java\jdk1.7.0_45\bin\java" -version java version "1.7.0_45" Java(TM) SE Runtime Environment (build 1.7.0_45-b18) Java HotSpot(TM) Client VM (build 24.45-b08, mixed mode, sharing)
Once JDK is installed, you can try to use it to compile and execute a simple Java program:
1. Use Notepad to enter the following Java program into a file called Hello.java:
class Hello { public static void main(String[] a) { System.out.println("Hello world!"); } }
2. Then compile this program in a command window with the javac command:
C:\herong>"\Program Files\Java\jdk1.7.0_45\bin\javac" Hello.java
3. To execute the program, use the java command:
C:\herong>"\Program Files\Java\jdk1.7.0_45\bin\java" Hello Hello world!
Congratulations, you have successfully entered, compiled and executed your first Java program with JDK 1.7.0.
Table of Contents
JVM (Java Virtual Machine) Specification
Java HotSpot VM - JVM by Oracle/Sun
java.lang.Runtime Class - The JVM Instance
java.lang.System Class - The Operating System
ClassLoader Class - Class Loaders
Class Class - Class Reflections
JVM Stack, Frame and Stack Overflow
Thread Testing Program and Result
CPU Impact of Multi-Thread Applications
I/O Impact of Multi-Thread Applications
Micro Benchmark Runner and JVM Options
Micro Benchmark Tests on "int" Operations
Micro Benchmark Tests on "long" Operations
Micro Benchmark Tests in JIT Compilation Mode
Micro Benchmark Tests on "float" and "double" Operations