三个java文件怎么一起编译？

[seekmoon]

现在有三个文件：如下
Security.java
package securitybeans;
import java.rmi.RemoteException;
import javax.ejb.EJBObject;
public interface Security extends EJBObject
{
public String encrypt( String strSource ) throws RemoteException;
public String decrypt( String strTarget ) throws RemoteException;
}/* Security */

file 2
SecurityHome.java
package securitybeans;
import java.rmi.RemoteException;
import javax.ejb.EJBHome;
import javax.ejb.CreateException;
public interface SecurityHome extends EJBHome
{
Security create() throws CreateException, RemoteException;
}/* EJBHome */

file3
ScurityBean.java
package securitybeans;
import java.rmi.RemoteException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
public class SecurityBean implements SessionBean
{
public String encrypt( String strSource )
{
String strTarget = "";
for ( int i = strSource.length() - 1; i >= 0; i -- )
{
strTarget += strSource.charAt( i );
}//for
return strTarget;
}//encrypt()
public String decrypt( String strTarget )
{
String strSource = "";
for ( int i = strTarget.length() - 1; i >= 0; i -- )
{
strSource += strTarget.charAt( i );
}//for
return strSource;
}//decrypt()
public void ejbActivate() {}//ejbActivate()
public void ejbRemove() {}//ejbRemove()
public void ejbPassivate() {}//ejbPassivate()
public void setSessionContext( SessionContext sc ) {}//setSessionContext()
public void ejbCreate() {}//ejbCreate()
public void ejbLoad() {}//ejbLoad()
public void ejbStore() {}//ejbStore()
}/* SecurityBean */

这是个EJB的例子，我环境变量都设置好了，现在我用javac -classpath filename.java编译任何一个都不报错，但是就是没有class文件，我搜索了我的硬盘也没有，书上提示说要联遍，我不会，
请问如何联遍这三个文件？

[网络咖啡]

javac *.java

[jaderiver]

javac Security.java SecurityHome.java ScurityBean.java

[takecare]

set classpath=.;%classpath%
javac *.java

[zhouwj]

在当前目录下执行
javac -d ./ *.java