JDK1.8 HashMap 源码分析之resize函数（一）

一、HashMap内部结构

static final int DEFAULT_INITIAL_CAPACITY = 1 << 4; // aka 16

static final int MAXIMUM_CAPACITY = 1 << 30;

staic final float DEFAULT_LOAD_FACTOR = 0.75f;

static final int TREEIFY_THRESHOLD = 8;

static final int UNTREEIFY_THRESHOLD = 6;

static final int MIN_TREEIFY_CAPACITY = 64;