HashMap遍历取值
HashMap<String, String> map = new HashMap<String, String>();
1.获取HashMap中的所有键
Set<String> keys = map.keySet();
for (String key : keys) {
System.out.print(key+" ");
}
2.获取Map中所有值
Collection<String> values = map.values();
for (String value : values) {
System.out.print(value+" ");
}
3.获取值和键
Set<java.util.Map.Entry<String, String>> entrys = map.entrySet();
for (java.util.Map.Entry<String, String> entry : entrys){
System.out.println(entry.getKey() + "--" + entry.getValue());
}