File size: 1,174 Bytes
0284885 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | package properties_package;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
public class properties_demo1 {
public static void main(String[] args) {
/*
Properties作为Map集合的操作
*/
//1、创建集合的对象
Properties prop = new Properties();
//2、添加数据
//细节：虽然我们可以往Properties当中添加任意的数据类型，但是一般只会往里面添加字符串类型的数据
prop.put("aaa", "111");
prop.put("aaa", "111");
prop.put("aaa", "222");
prop.put("bbb", "111");
//3、遍历集合
Set<Object> keys = prop.keySet();
for (Object key : keys) {
Object value = prop.get(key);
System.out.println(key + "=" + value);
}
System.out.println("=======================");
Set<Map.Entry<Object, Object>> entries = prop.entrySet();
for (Map.Entry<Object, Object> entry : entries) {
Object key = entry.getKey();
Object value = entry.getValue();
System.out.println(key + "=" + value);
}
}
}
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