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public class Stack<T>{
private ArrayList<T> list;
public Stack(){
list = new ArrayList<T>();
}
public T pop(){
if(list.size != 0 ){
T popOut = list.get(list.size - 1);
remove(popOut);
return popOut;
}
else{
return null;
}
}
}
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import java.io.IOException;
import java.io.PrintWriter;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public cl ......
package dtm.tools;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Calendar;
import java.util.Dat ......