Java 中的 SimpleBindings putAll()方法，带示例
原文:https://www . geesforgeks . org/simplebindings-pull-method-in-Java-with-examples/
简单绑定类的 putAll() 方法用于添加映射的所有键值对，这些键值对作为参数传递给简单绑定对象。
语法:
public void putAll(Map<String, Object> toMerge)
参数:该方法接受参数为要添加的值的映射。 返回值:此方法不返回任何内容。 异常:该方法抛出以下异常:
- NullPointRexception:如果一个大型映射为空或者如果映射中的某个键为空。
- IllegalArgumentException :如果地图中的某个键是空字符串。
以下是演示 putAll()方法工作的程序: 程序 1:
Java 语言(一种计算机语言，尤用于创建网站)
// Java programs to Illustrate
// the working of putAll() method
import javax.script.SimpleBindings;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create simpleBindings object
SimpleBindings bindings = new SimpleBindings();
// create Map
HashMap<String, String> map = new HashMap<>();
// add key value pair to Map
map.put("key1", "value1");
map.put("key2", "value2");
map.put("key3", "value3");
// apply putAll
bindings.putAll(map);
// print
System.out.println(
"Key1:"
+ bindings.get("key1"));
System.out.println(
"Key2:"
+ bindings.get("key2"));
System.out.println(
"Key3:"
+ bindings.get("key3"));
}
}
Output:
Key1:value1
Key2:value2
Key3:value3
程序 2:
Java 语言(一种计算机语言，尤用于创建网站)
// Java programs to Illustrate
// the working of putAll() method
import javax.script.SimpleBindings;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create simpleBindings object
SimpleBindings asiaTeamList
= new SimpleBindings();
// create Map
HashMap<String, String> map = new HashMap<>();
// add team in map using put()
map.put("team1", "India");
map.put("team2", "Sri Lanka");
map.put("team3", "Pakistan");
map.put("team4", "Bangladesh");
// apply putAll
asiaTeamList.putAll(map);
// print
System.out.println(
"Team1: "
+ asiaTeamList.get("team1"));
System.out.println(
"Team2: "
+ asiaTeamList.get("team2"));
System.out.println(
"Team3: "
+ asiaTeamList.get("team3"));
System.out.println(
"Team4: "
+ asiaTeamList.get("team4"));
}
}
Output:
Team1: India
Team2: Sri Lanka
Team3: Pakistan
Team4: Bangladesh
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