在Spring -boot中使用ForEach进行迭代

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

@SpringBootApplication
public class ForEachExampleApplication {

    public static void main(String[] args) {
        SpringApplication.run(ForEachExampleApplication.class, args);

        // 创建一个示例集合
        List<String> names = Arrays.asList("Alice", "Bob", "Charlie");

        // 使用forEach遍历集合
        names.forEach(name -> {
            System.out.println("Hello, " + name + "!");
        });
    }
}

if (names != null) {
    names.forEach(name -> {
        System.out.println("Hello, " + name + "!");
    });
}

import java.util.concurrent.CopyOnWriteArrayList;

// 创建一个线程安全的集合
List<String> names = new CopyOnWriteArrayList<>(Arrays.asList("Alice", "Bob", "Charlie"));

// 使用forEach遍历集合并修改集合
names.forEach(name -> {
    if (name.equals("Bob")) {
        names.remove(name);
    }
    System.out.println("Hello, " + name + "!");
});