方法一: keySet()
for(String key ; map
.keySet(){
System
.out
.println("key" + key
+ ",value" + map
.get(key
));
}
方法二: entrySet()
for(Map
.Entey entry
: map
.entrySet()){
System
.out
.println("key" + entry
.getKey() + ",value" + entry
.getValue());
}
方法三: JDK8特性
map
.foreach((key
,value
) ->{
System
.out
.println("key =" + key
+ ": " + value
);
})
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