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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); } }