輸出為

取得鍵：1

對(duì)應(yīng)的值為：com.CollectionTest.Student@232204a1

取得鍵：3

對(duì)應(yīng)的值為：com.CollectionTest.Student@4aa298b7

提上代碼

public?void?testEntrySet()?{
//?通過entrySet方法返回Map中所有鍵值對(duì)
Set<Entry<String,?Student>>?entryset?=?Students.entrySet();
for?(Entry<String,?Student>?entry?:?entryset)?{
System.out.println("取得鍵："?+?entry.getKey());
System.out.println("對(duì)應(yīng)的值為："?+?entry.getValue());
}
}