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cn.hutool.core.collection.CollUtil.subtract 针对 coll1 为只读集合的补偿

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mcp 2023-01-17 16:13:20 +08:00
parent 61dbf0ffe2
commit 57ea3a31a3
1 changed files with 10 additions and 3 deletions
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13
hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
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@ -365,11 +365,18 @@ public class CollUtil {
*/
public static <T> Collection<T> subtract(Collection<T> coll1, Collection<T> coll2) {
Collection<T> result = ObjectUtil.clone(coll1);
if (null == result) {
result = CollUtil.create(coll1.getClass());
try {
if (null == result) {
result = CollUtil.create(coll1.getClass());
result.addAll(coll1);
}
result.removeAll(coll2);
} catch (UnsupportedOperationException e){
// 针对 coll1 为只读集合的补偿
result = CollUtil.create(AbstractCollection.class);
result.addAll(coll1);
result.removeAll(coll2);
}
result.removeAll(coll2);
return result;
}