Java/com/study/demo9/TaskRunner.java

package com.study.demo9;

public class TaskRunner {
    public void runTask() {
        class LocalTask {
            void execute() {
                System.out.println("正在执行临时任务");
            }
        }

        LocalTask task = new LocalTask();
        task.execute();
    }

    public static void main(String[] args) {
        TaskRunner runner = new TaskRunner();
        runner.runTask();
    }
}