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package java.util;
public abstract class AbstractMap
implements Map
{
protected AbstractMap()
{
}
public int size()
{
return entrySet().size();
}
public boolean isEmpty()
{
return size() == 0;
}
public boolean containsValue(Object value)
{
Iterator it = entrySet().iterator();
while (it.hasNext())
{
Map.Entry v = (Map.Entry)it.next();
if (value == null)
{
if (v.getValue() == null)
{
return true;
}
}
else
{
if (value.equals(v.getValue()))
{
return true;
}
}
}
return false;
}
public boolean containsKey(Object key)
throws ClassCastException, NullPointerException
{
Iterator it = entrySet().iterator();
while (it.hasNext())
{
Map.Entry v = (Map.Entry)it.next();
if (key == null)
{
if (v.getKey() == null)
{
return true;
}
}
else
{
if (key.equals(v.getKey()))
{
return true;
}
}
}
return false;
}
public Object get(Object key)
throws ClassCastException, NullPointerException
{
Iterator it = entrySet().iterator();
while (it.hasNext())
{
Map.Entry v = (Map.Entry)it.next();
if (key == null)
{
if (v.getKey() == null)
{
return v.getValue();
}
}
else
{
if (key.equals(v.getKey()))
{
return v.getValue();
}
}
}
return null;
}
public Object put(Object key, Object value)
throws RuntimeException
{
throw new RuntimeException();
}
public Object remove(Object key)
{
Iterator it = entrySet().iterator();
Object o = null;
while (it.hasNext())
{
Map.Entry v = (Map.Entry)it.next();
if (key == null)
{
if (v.getKey() == null)
{
o = v.getValue();
it.remove();
return o;
}
}
else
{
if (key.equals(v.getKey()))
{
o = v.getValue();
it.remove();
return o;
}
}
}
return null;
}
public void putAll(Map t)
{
Iterator it = t.entrySet().iterator();
while (it.hasNext())
{
Map.Entry v = (Map.Entry)it.next();
put(v.getKey(), v.getValue());
}
}
public void clear()
{
entrySet().clear();
}
public Set keySet()
{
throw new RuntimeException("no keySet in AbstractMap()");
}
public Collection values()
{
throw new RuntimeException("no values in AbstractMap()");
}
public abstract Set entrySet();
public boolean equals(Object o)
{
throw new RuntimeException("no equals in AbstractMap()");
}
public int hashCode()
{
throw new RuntimeException("no hashCode in AbstractMap()");
}
public String toString()
{
throw new RuntimeException("no toString in AbstractMap()");
}
}
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