출처1 : <a href="https://www.baeldung.com/java-filter-collection-by-list" target="_blank">https://www.baeldung.com/java-filter-collection-by-list</a>출처2 : <a href="https://stackoverflow.com/questions/2965747/why-do-i-get-an-unsupportedoperationexception-when-trying-to-remove-an-element-f" target="_blank">https://stackoverflow.com/questions/2965747/why-do-i-get-an-unsupportedoperationexception-when-trying-to-remove-an-element-f</a> 출처3 : <a href="https://www.baeldung.com/java-use-remove-item-stream" target="_blank">https://www.baeldung.com/java-use-remove-item-stream</a> 출처4 : <a href="https://www.baeldung.com/java-8-collectors" target="_blank">https://www.baeldung.com/java-8-collectors</a> <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div>private&nbsp;Set&lt;String&gt;&nbsp;ExceptFilter(boolean&nbsp;isNoRegistered)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;걸러낼&nbsp;조건&nbsp;만드는&nbsp;함수</div><div>&nbsp;&nbsp;&nbsp;&nbsp;List&lt;String&gt;&nbsp;filterList&nbsp;=&nbsp;new&nbsp;ArrayList&lt;String&gt;();</div> <div>&nbsp;&nbsp;&nbsp;&nbsp;filterList.addAll(Arrays.asList("6",&nbsp;"7",&nbsp;"9",&nbsp;"11",&nbsp;"14",&nbsp;"301",&nbsp;"302"));</div><div>&nbsp;&nbsp;&nbsp;&nbsp;if(isNoRegistered)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;filterList.addAll(Arrays.asList("4",&nbsp;"8"));</div> <div>&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;filterList.stream().collect(Collectors.toSet());</div><div>}</div> <div>private&nbsp;void&nbsp;deliveryExcept(MapExtList&nbsp;mapExtList,&nbsp;boolean&nbsp;isNoRegistered){</div><div>&nbsp;&nbsp;&nbsp;&nbsp;Set&lt;String&gt;&nbsp;dFilterSet&nbsp;=&nbsp;ExceptFilter(isNoRegistered);</div> <div>&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;필터&nbsp;조건에&nbsp;부합하는&nbsp;리스트를&nbsp;만들어서</div><div>&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;collect&nbsp;부분은&nbsp;list,&nbsp;map,&nbsp;set&nbsp;등으로&nbsp;변경될&nbsp;수&nbsp;있음</div><div>&nbsp;&nbsp;&nbsp;&nbsp;MapExtList&nbsp;filtered&nbsp;=&nbsp;mapExtList.stream()</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.filter(m&nbsp;-&gt;&nbsp;dFilterSet.contains(m.get("CD_VAL")))</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.collect(MapExtList::new,&nbsp;MapExtList::add,&nbsp;MapExtList::addAll);</div> <div>&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;해당&nbsp;리스트를&nbsp;본&nbsp;리스트에서&nbsp;삭제한다</div><div>&nbsp;&nbsp;&nbsp;&nbsp;mapExtList.removeAll(filtered);</div><div>}</div></div>

[Java] 리스트로 리스트 필터링 하기 list filter by list / stream()