# OCPJP 1Z0-809 準備筆記

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.title {
color: #FF5809;
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<details>
<summary class="title">stream和function相關API的用法</summary>

- [Consumer、Function、Predicate與Supplier](https://hackmd.io/yjpcFhs-R6e6GRnOP1HKQA)
- [BiConsumer用法](https://hackmd.io/x_zO1S4fQyW2OJrqwke-Mw)
- [Collectors的groupingBy()](https://hackmd.io/ba4NpiHNTgu5m7-VEEF7hQ)
- [count()、peek()、mapToInt()用法](https://hackmd.io/DsXjDawCQd-yQTKJfo1ndg)
- [removeIf的用法](https://hackmd.io/QY-kwigVSnSxq04See6cSA)
- [findAny, findFirst,anyMatch,allMatch方法](https://hackmd.io/masl-0D5RjWgHCDGBsRwrQ)
- [reduce的用法](https://hackmd.io/egWphV8bR9-xcju68TelNw)
- [IntStream、DoubleStream的用法](https://hackmd.io/S4sSKtB0REKX-v956VfxvQ)
- [flatMap 的用法](https://hackmd.io/8bjHycmlRMmk9n4c1u7CCQ)
- [Method Reference](https://hackmd.io/5mUrngyKRvS_T8-tgblqCw)
- [IntFunction與UnaryOperator的用法](https://hackmd.io/rlasOIoPR0GJdFGrILYa1w)
</details>

<details>
<summary class="title">多執行緒相關</summary>

- [多執行緒的範例](https://hackmd.io/dDXKmsxmQtqUq4BmdFwJ1Q?both)
- [Runnable、Callable、Future、ExecutorService](https://hackmd.io/W-uUtU5sQTi9_IRCBbIbcg)
- [CyclicBarrier的用法](https://hackmd.io/TlvaUAciQIyxJ_2RAaZ3eg)
- [AtomicInteger的用法](https://hackmd.io/5DTlHrUtTNeWZf-7wHg14A)
- [死結的範例](https://hackmd.io/nW1sLWdgRMqDN1EWVYq8iw)
</details>

<details>
<summary class="title">java.sql相關</summary>

- [java.sql的範例](https://hackmd.io/q_wdkVoKQ2yAfX_kI9dYgw)
- [ResultSet的用法](https://hackmd.io/5iCDdk9rTv20OIWckO84hQ)
</details>

<details>
<summary class="title">簡答題彙整</summary>

- [簡答題彙整](https://hackmd.io/6-orRrmaQOGSKmifmiICfA)
</details>

<details>
<summary class="title">IO相關</summary>

- [File類別和listFiles(),list(),walk(),find()比較](https://hackmd.io/ZiBEr7ROTPmNwGpk7PLgGA)
- [遞迴刪除檔案](https://hackmd.io/auXBMASpROuUbIhc5NuS3A)
- [try-with-resources 的用法](https://hackmd.io/kNWjsXhaT1SPxdHxCLEzng)
- [Path 的相關方法](https://hackmd.io/nOYSGcEFTpKrxy4Lw1eDjw)
- [InputStreamReader相關方法](https://hackmd.io/mjbOfPT_TICkMzazWRQUlA)
- [ResourceBundle的用法](https://hackmd.io/PQKBQhHZQ3eRlxDCSo0MiQ)
- [搬移檔案 move](https://hackmd.io/5ucIM61JTsWQfPv7W22gdg)
- [複製檔案 copy](https://hackmd.io/uRdfQbcoTlCxOth0HJCb9Q)
</details>

<details>
<summary class="title">Date相關</summary>

- [時區ZonedDateTime](https://hackmd.io/Bsme5xeTSs6HYTov5raBzQ)
- [LocalDate 相關](https://hackmd.io/Bg8Q7ehATqCjq-xr673yQg)
</details>

<details>
<summary class="title">TreeSet 和 TreeMap</summary>

- [TreeSet進行物件排序](https://hackmd.io/Ylba1hPvRyKbJdcJikrilA)
- [TreeMap的儲存方式](https://hackmd.io/atN26pwQSyKs7Kss8rI6WQ)
</details>

[Deque 雙向佇列](https://hackmd.io/nl0KXmrXSOOp-4pdr9t5rA)
[assert的用法](https://hackmd.io/yNb8fj86RR-p7S4OynjVPQ)
[try()的小括號裡面的規則](https://hackmd.io/y_f7_V6ETAiBnJxClfP0YA)
[NumberFormat 和 Locale](https://hackmd.io/f3PJHitZSA6yx9ML1AQvcg)
[abstract class和interface](https://hackmd.io/zGV96m75RHCoVePT8YgzgQ)
[import 靜態成員](https://hackmd.io/sYFaAgHkSamOQbTQTMg2og)
[泛型的用法](https://hackmd.io/bTtDNCbaTj-FN-DmCe18XA)
[final 的用法](https://hackmd.io/4qu4E5TvTrmSMx87aD-R9w)
[例外和錯誤](https://hackmd.io/6g-dURheS6ChDNrtMtkqfg)
[介面 interface 延伸](https://hackmd.io/GvSU06fjQTWLPf1jTPjRCw)
[System.console()](https://hackmd.io/HU-kLubYSvaBkeqJWZbDMA)
[區域內部類別](https://hackmd.io/71A5Prz4Tn6WSLPID7bXTw)
[enum的用法](https://hackmd.io/q50geRmIRLCOKS29LhcMxw)

[別人統整的網站](https://hjpotter1.github.io/post/1z0-809/)
###### tags: `Index` `ocpjp`