Getting OS memory size from java

Question

Are there any way to get the size of the total memory on the operating system from java? Using

Runtime.getRuntime().maxMemory()

returns the

Answer 1

There is no Java-only way to get that information. You may use Runtime.exec() to start OS-specific commands, e.g. /usr/bin/free on Linux. Still on Linux systems, you can use Java file access classes (FileInputStream) to parse /proc/meminfo.