The code in `Integer.decode()` and `Long.decode()` might allocate two instances of Integer/Long for the negative values less than -127:
Integer result; result = Integer.valueOf(nm.substring(index), radix); result = negative ? Integer.valueOf(-result.intValue()) : result; To avoid this we can declare 'result' as `int` and use `Integer.parseInt()` method. Same applicable for `Long` and some other classes. ------------- Commit messages: - Merge branch 'master' into 8267844 - 8267844: Replace Integer/Long.valueOf() with Integer/Long.parse*() where applicable Changes: https://git.openjdk.java.net/jdk/pull/5068/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5068&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8267844 Stats: 12 lines in 4 files changed: 0 ins; 1 del; 11 mod Patch: https://git.openjdk.java.net/jdk/pull/5068.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5068/head:pull/5068 PR: https://git.openjdk.java.net/jdk/pull/5068
