MultiMC5/libraries/javacheck/JavaCheck.java

import java.lang.Integer;

public class JavaCheck
{
	private static final String[] keys = {"os.arch", "java.version"};
	public static void main (String [] args)
	{
		int ret = 0;
		for(String key : keys)
		{
			String property = System.getProperty(key);
			if(property != null)
			{
				System.out.println(key + "=" + property);
			}
			else
			{
				ret = 1;
			}
		}
		
		System.exit(ret);
	}
}