public class JavaInfo {

	public JavaInfo() {

		String strHome = System.getProperty("java.home");

		if (strHome.endsWith( "/" + "jre" )) {

			strHome = strHome.substring(0, strHome.length()-4);

		}

		System.out.println(strHome);

	}

	public static void main(String args[]) {

		new JavaInfo();

	}

}