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匿名内部类 #140

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匿名内部类 #140

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13 changes: 13 additions & 0 deletions src/main/java/com/github/hcsp/polymorphism/User.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
package com.github.hcsp.polymorphism;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

Expand Down Expand Up @@ -29,6 +30,18 @@ public static List<String> collectNames(List<User> users) {
NameCollector collector = new NameCollector();
users.forEach(collector);
return collector.getNames();
new NameCollector() {
private final List<String> names = new ArrayList<>();

@Override
public void accept(User user) {
names.add(user.getName());
}

public List<String> getNames() {
return names;
}
};
}

public static void main(String[] args) {
Expand Down