java - 更改数组中的特定对象值
问题描述
我需要在每个单独的站中独立更改fuelType
和mode
,但我不知道如何,我可以打印数组但无法弄清楚更改其内容
station = new Pumps [10];
station[0] = new Pumps(" P101", "Idle", "Default", 0.0, 0.0, 0.0);
station[1] = new Pumps(" P102", "Idle", "Default", 0.0, 0.0, 0.0);
station[2] = new Pumps(" P103", "Idle", "Default", 0.0, 0.0, 0.0);
station[3] = new Pumps(" P104", "Idle", "Default", 0.0, 0.0, 0.0);
station[4] = new Pumps(" P105", "Idle", "Default", 0.0, 0.0, 0.0);
station[5] = new Pumps(" P201", "Idle", "Default", 0.0, 0.0, 0.0);
station[6] = new Pumps(" P202", "Idle", "Default", 0.0, 0.0, 0.0);
station[7] = new Pumps(" P203", "Idle", "Default", 0.0, 0.0, 0.0);
station[8] = new Pumps(" P204", "Idle", "Default", 0.0, 0.0, 0.0);
station[9] = new Pumps(" P205", "Idle", "Default", 0.0, 0.0, 0.0);
用户需要通过其 ID 来查找电台,例如。P101,然后更改每个显示 Idle 和 Default 的值
这是我的对象类:
public class Pumps {
private String pumpID;
private String mode;
private String fuelType;
private double total;
private double pumpOutPut;
private double pumpInTake;
//Constructor
public Pumps ( String pumpID, String mode, String fuelType, double total ,
double pumpOutPut, double pumpInTake){
this.pumpID = pumpID;
this.mode = mode;
this.fuelType = fuelType;
this.total = total;
this.pumpOutPut = pumpOutPut;
this.pumpInTake = pumpInTake;
}
//*************Pump-ID*********************
public String getPumpID() {
return pumpID;
}
public void setPumpID(String pumpID) {
this.pumpID = pumpID;
}
//*************MODE*********************
public void setMode(String newMode) {
this.mode = newMode;
}
public String getMode() {
return mode;
}
//*************FUEL-TYPE*********************
public void setFuelType(String newFuelType) {
this.fuelType = newFuelType;
}
public String getFuelType() {
return fuelType;
}
//*************PUMP-IN-TAKE*********************
public void setPumpInTake(double pumpInTake) {
this.pumpInTake = pumpInTake;
}
//**************PUMP-OUT-PUT********************
public void setPumpOutPut(double pumpOutPut) {
this.pumpOutPut = pumpOutPut;
}
//*************TOTAL*********************
public void setTotal(double total) {
this.total = total;
}
}
解决方案
您可以遍历 Pumps 数组并在发现特定元素更改您需要的属性后搜索它
for (int i = 0; i < station.length; i++) {
if (" P101".equals(station[i].getPumpID())) {
station[i].setMode("newMode");
station[i].setFuelType("newFuelType");
}
}
推荐阅读
- wordpress - 从帖子标题中删除网站名称?
- java - 在java中插入带有准备好的语句的多行字符串
- javascript - 如何使条在d3中具有不同的颜色?
- javascript - 接收 TypeError ... 不是函数
- r - 如何在 r 中创建一个随机增加的矩阵?
- twitter - 英国的 Twitter Profile Geo Enrichment
- c# - C# SQL: System.InvalidOperationException: '已经有一个打开的 DataReader 与此命令关联,必须先关闭。'
- python - 在pytorch中使用预训练对象检测器时如何获得边界框所有类的置信度分数
- javascript - AWS 中是否有全局变量的真正替代品?
- arrays - 我们命名这个数组中的每个元素吗?