Examples of java.util.Collection.clear()

java.util.Collection.clear()
Removes all of the elements from this collection (optional operation). The collection will be empty after this method returns. @throws UnsupportedOperationException if the clear operationis not supported by this collection


        resetFull();
        assertTrue("Full collection shouldn't contain other elements", 
                   !collection.containsAll(col));
        
        col.clear();
        col.addAll(Arrays.asList(getFullElements()));
        assertTrue("Full collection should containAll full elements",
                   collection.containsAll(col));
        // make sure calls to "containsAll" don't change anything
        verify();

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    TypeSystemDescription tsd = typeSystemDescription;
    if (null != tsd) {
      tsd = (TypeSystemDescription) tsd.clone();
      tsd.setTypes(typeDescriptionArray0);
    }
    tsdc.clear();
    tsdc.add(tsd);
    importedTypeSystemDescription = CasCreationUtils
            .mergeTypeSystems(tsdc, createResourceManager());
  }

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        Collection coll = getProxyManager().copyCollection(orig);
        if (coll == null)
            throw new UserException(_loc.get("not-copyable",
                vmd.getFieldMetaData()));


        coll.clear();
        for (Iterator itr = orig.iterator(); itr.hasNext();)
            coll.add(embed(vmd, itr.next()));
        return coll;
    }

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        Column[] cols;
        Collection unmappedCols = new ArrayList(5);
        for (int i = 0; i < schemas.length; i++) {
            tables = schemas[i].getTables();
            for (int j = 0; j < tables.length; j++) {
                unmappedCols.clear();
                cols = tables[j].getColumns();
                for (int k = 0; k < cols.length; k++)
                    if (cols[k].getRefCount() == 0)
                        unmappedCols.add(cols[k]);

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        ValueMetaData vmd = fmd.getElement();
        if (!vmd.isDeclaredTypePC())
            return coll;


        // unfortunately we have to clear the original and re-add
        coll.clear();
        Object elem;
        for (Iterator itr = orig.iterator(); itr.hasNext();) {
            if (vmd.getCascadeAttach() == ValueMetaData.CASCADE_NONE)
                elem = getReference(manager, itr.next(), sm, vmd);
            else

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                Iterator iterator = markers.iterator();
                while (iterator.hasNext()) {
                    Marker m = (Marker) iterator.next();
                    m.removeChangeListener(this);
                }
                markers.clear();
            }
        }
        if (this.foregroundDomainMarkers != null) {
            Collection markers
                = (Collection) this.foregroundDomainMarkers.get(key);

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                Iterator iterator = markers.iterator();
                while (iterator.hasNext()) {
                    Marker m = (Marker) iterator.next();
                    m.removeChangeListener(this);
                }
                markers.clear();
            }
        }
        fireChangeEvent();
    }

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                Iterator iterator = markers.iterator();
                while (iterator.hasNext()) {
                    Marker m = (Marker) iterator.next();
                    m.removeChangeListener(this);
                }
                markers.clear();
            }
        }
        if (this.foregroundRangeMarkers != null) {
            Collection markers
                = (Collection) this.foregroundRangeMarkers.get(key);

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                Iterator iterator = markers.iterator();
                while (iterator.hasNext()) {
                    Marker m = (Marker) iterator.next();
                    m.removeChangeListener(this);
                }
                markers.clear();
            }
        }
        fireChangeEvent();
    }

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        ValueMetaData vmd = fmd.getElement();
        if (!vmd.isDeclaredTypePC())
            return coll;


        // unfortunately we have to clear the original and re-add
        coll.clear();
        Object elem;
        for (Iterator itr = orig.iterator(); itr.hasNext();) {
            if (vmd.getCascadeAttach() == ValueMetaData.CASCADE_NONE)
                elem = getReference(manager, itr.next(), sm, vmd);
            else

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