Retrieving the maximum JVM heap size

package customcode;

import com.ibm.rational.test.lt.kernel.services.ITestExecutionServices;

import java.net.*;

/**
 * The JVM_Info class retrieves the maximum heap size of the JVM. 
 * It writes a message in the test log with the hostname where the
 * JVM is running and the JVM's maximum heap size in megabytes.
 */

/**
 * @author IBM Custom Code Samples
 */

public class JVM_Info implements
        com.ibm.rational.test.lt.kernel.custom.ICustomCode2 {

    public JVM_Info() {
    }

    public String exec(ITestExecutionServices tes, String[] args) {
        Runtime rt = Runtime.getRuntime();
        long maxMB = rt.maxMemory()/(1024*1024); // maxMemory() size is in bytes
        String hostName = "Unknown";        
                
        try {
            hostName = InetAddress.getLocalHost().getHostName();
        } catch (UnknownHostException e1) {
            tes.getTestLogManager().reportMessage("Can't get hostname");
            return null;
        }
                
        tes.getTestLogManager().reportMessage("JVM maximum heap size for host "
                                        + hostName + " is " + maxMB + " MB");
        return null;
     }
}