package lianxii;
import java.util.HashMap;
import java.util.Map;
public class MapExp {
public static void main(String[] args) {
// String s = "";一般字符串定义成这样
// String p1 = null;对象一般定义成这样
String s1 = "p";
Map<String, Object> map = new HashMap<String, Object>();//Object型是很多类型都可以
map.put(s1, 7);
map.put("user", "name");
map.put("ll", false);
Object a1 = map.get(s1);
Object a2 = map.get("user");
Object a3 = map.get("ll");
System.out.println("a1=" + a1 + "\na2=" + a2 + "\na3=" + a3);
}
}
//输出结果
//a1=7
//a2=name
//a3=false
import java.util.HashMap;
import java.util.Map;
public class MapExp {
public static void main(String[] args) {
// String s = "";一般字符串定义成这样
// String p1 = null;对象一般定义成这样
String s1 = "p";
Map<String, Object> map = new HashMap<String, Object>();//Object型是很多类型都可以
map.put(s1, 7);
map.put("user", "name");
map.put("ll", false);
Object a1 = map.get(s1);
Object a2 = map.get("user");
Object a3 = map.get("ll");
System.out.println("a1=" + a1 + "\na2=" + a2 + "\na3=" + a3);
}
}
//输出结果
//a1=7
//a2=name
//a3=false