There are few places in code where manual `for` loop is used with Iterator to iterate over Collection. Instead of manual `for` cycles it's preferred to use enhanced-for cycle instead: it's less verbose, makes code easier to read and it's less error-prone. Sometimes we even don't need cycle at all: we can just create one ArrayList as a copy of another. It doesn't have any performance impact: java compiler generates similar code when compiling enhanced-for cycle. This is continuation of [JDK-8273261](https://bugs.openjdk.java.net/browse/JDK-8273261)
------------- Commit messages: - [PATCH] Replace 'for' cycles with iterator with enhanced-for in java.base Changes: https://git.openjdk.java.net/jdk/pull/5665/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5665&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8274237 Stats: 32 lines in 4 files changed: 0 ins; 14 del; 18 mod Patch: https://git.openjdk.java.net/jdk/pull/5665.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5665/head:pull/5665 PR: https://git.openjdk.java.net/jdk/pull/5665
