cadsymbolmanager.java

来自「这是学习java与设计模式一书时所必备的源代码。只有这样才能更加深刻的理解编程的」· Java 代码 · 共 23 行

package com.javapatterns.prototype.cad;
// CadSymbolManager

import java.util.*;

public class CadSymbolManager
{
  private Hashtable symbols = new Hashtable();
  // add symbol to collection

  void addSymbol(CadSymbol sym)
  {
    symbols.put(sym.getType(), sym);
  }

  // retrieve symbol by type
  CadSymbol getSymbol (String symbolType)
  {
    return (CadSymbol) ((CadSymbol)symbols.get(symbolType)).clone();
  }
}