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我已经搜索论坛处理集合的深度复制,但在我的手中Collections.copy(dest,src)未按预期工作。我错过了什么?Collections.copy(dest,src)仍然参考源集合
List<Column> mergedStudies = new ArrayList<Column>(Arrays.asList(new Column[studyColumns.size()]));
Collections.copy(mergedStudies, studyColumns);
for (Iterator itrStudyRecColumns = mergedStudies.iterator(); itrStudyRecColumns.hasNext();) {
Column studyRecCol = (Column) itrStudyRecColumns.next();
for (Iterator itrStudyValColumns = studyValueColumns.iterator(); itrStudyValColumns.hasNext();) {
Column studyValCol = (Column) itrStudyValColumns.next();
if (studyRecCol.getColumnName().equals(studyValCol.getColumnName())) {
// Note: this method dereferences copies to an existing destination collection WITH items appended to end of collection.
CellValue[] cellValArray = studyValCol.getCellValues().toArray(new CellValue[studyValCol.getCellValues().size()]);
studyRecCol.getCellValues().addAll(new ArrayList<CellValue>(Arrays.asList(cellValArray)));
break;
}
}
}
感谢,
克里斯
Column是否实现Cloneable接口? – helpermethod 2011-01-25 22:16:38