public class HashMapTest {
public static void main(String[] args) {
// 创建并赋值 HashMap
Map<Integer, String> map = new HashMap();
map.put(1, "Java");
map.put(2, "JDK");
map.put(3, "Spring Framework");
map.put(4, "MyBatis framework");
map.put(5, "Java中文社群");
// 遍历
Iterator<Map.Entry<Integer, String>> iterator = map.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry<Integer, String> entry = iterator.next();
System.out.println(entry.getKey());
System.out.println(entry.getValue());
}
}
}
public class HashMapTest {
public static void main(String[] args) {
// 创建并赋值 HashMap
Map<Integer, String> map = new HashMap();
map.put(1, "Java");
map.put(2, "JDK");
map.put(3, "Spring Framework");
map.put(4, "MyBatis framework");
map.put(5, "Java中文社群");
// 遍历
for (Map.Entry<Integer, String> entry : map.entrySet()) {
System.out.println(entry.getKey());
System.out.println(entry.getValue());
}
}
}
public class HashMapTest {
public static void main(String[] args) {
// 创建并赋值 HashMap
Map<Integer, String> map = new HashMap();
map.put(1, "Java");
map.put(2, "JDK");
map.put(3, "Spring Framework");
map.put(4, "MyBatis framework");
map.put(5, "Java中文社群");
// 遍历
map.forEach((key, value) -> {
System.out.println(key);
System.out.println(value);
});
}
}
参考:https://www.cnblogs.com/Vincent-yuan/p/15164386.html