La collection de listes Java utilise le flux stream pour trouver l'indice correspondant et échanger les positions en fonction de la valeur de l'attribut.

import java.util.*;


public class TestAa {

    private String name;

    private Integer id;

    public static void main(String[] args) {
        List<TestAa> list = new ArrayList<>();
        list.add(new TestAa("dehua", 1));
        list.add(new TestAa("德华", 2));
        list.add(new TestAa("等会", 3));
        list.add(new TestAa("德华", 4));

        String name = "德华";
        //找到name=德华的第一个对象的下标
        Optional<Integer> first = list.stream().
                filter(i -> Objects.equals(i.getName(), name)).
                map(list::indexOf).findFirst();
        if (first.isPresent()) {
            Integer index = first.get();
            System.out.println("true：" + index);
            //下标数据交换
            Collections.swap(list, 0, index);
        } else {
            System.out.println("false");
        }
        list.forEach(System.out::println);
    }

    public TestAa(String name, Integer id) {
        this.name = name;
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    @Override
    public String toString() {
        return "TestAa{" +
                "name='" + name + '\'' +
                ", id=" + id +
                '}';
    }
}