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Getting Computer Memory information in Java [closed]
ProcessBuilder processBuilder = new ProcessBuilder("systeminfo");
processBuilder.redirectErrorStream(true);
Process process = processBuilder.start();
String output = readOutput(process);
try {
    if (process.waitFor() != 0) {
        throw new IOException(
            "command exited in error: " + process.exitValue()
                + "n" + output);
    }
} catch (InterruptedException e) {
    e.printStackTrace();
}

// here parse output for what you want

Total Physical Memory: xxx MB
Available Physical Memory: xxx MB
Page File: Max Size: xxxx MB
Page File: Available: xxxx MB
Page File: In Use: xxx MB