如何通过对象数组列表中的字段 id 打印特定对象？

Question

我有一个存储多个位置对象的位置 class，从 JSON 文件解析。目前，我可以使用 toString() 方法打印出列表中的 all 个位置。输出如下所示：

这是列表中位置之一的示例：

Location [location=null, id=3, description=You are at battlefield of Jerusalem. You are in awe of your surroundings, you see an exit to the west., weight=100, name=Jerusalem, exit=[Exit [title=Hattin, direction=West]]],

但我想知道如何通过字段值 id 打印出该列表中的特定位置，例如 id="2" 的位置？

我在想可以创建一个覆盖 toString 方法来获取 id 的输入，并打印相应的位置对象，但不确定如何打印 'id':

if(LocationObject.getId() == "2") {
      //do something
}

这是存储对象的 POJO 位置 class：

public class Location {

    private Location[] location;

    private int id;

    private String description;

    private String weight;

    private String name;

    private Exit[] exit;

    private boolean visited = false;
    private boolean goalLocation;
    private int approximateDistanceFromGoal = 0;
    private Location parent;




    public Location[] getLocation() {
        return location;
    }

    public void setLocation(Location[] location) {
        this.location = location;
    }


    public int getId() {
        return id;
    }

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

    public String getDescription ()
    {
        return description;
    }

    public void setDescription (String description)
    {
        this.description = description;
    }


    public String getWeight() {
        return weight;
    }

    public void setWeight(String weight) {
        this.weight = weight;
    }

    public String getName ()
    {
        return name;
    }

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

    public Exit[] getExit() {
        return exit;
    }

    public void setExit(Exit[] exit) {
        this.exit = exit;
    }

    @Override
    public String toString() {
        return "Location [location=" + Arrays.toString(location) + ", id=" + id
                + ", description=" + description + ", weight=" + weight
                + ", name=" + name + ", exit=" + Arrays.toString(exit)
                +"]";
    }



}

Answer 1

尝试检查 id

if(LocationObject.getId() == "2") {
      System.out.println(LocationObject.getDescription());
}

如何通过对象数组列表中的字段 id 打印特定对象？

How to print a specific object by field id within an array list of objects?

arrays

object

pojo

println

java-5