构造函数错误（JAVA）

因此，我能够让我的第一个构造函数工作，但不是我的第二个p2构造函数。对于p2，我试图显示string，string，string，double，double，string，string。目前代码显示一个错误，字符串不能转换为double，但我不知道我是怎么做的

这是我的主要代码。 一揽子研究健康服务

    public class Studenthealthservices {

    public static void main(String[] args) {

        EMR p1 = new EMR("Colin","10-22-74");
        System.out.printf(p1.toString());

        EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");
        System.out.printf(p2.toString());

    }}

public class EMR {

    private String name;
    private String dob;
    private String rfv;
    private double bodyt;
    private double hr;
    private String diag;
    private String pmeds;

    public void setName(String name) {
        this.name = name;
    }
    public EMR (String name, String dob) {
    this.name = name;
    this.dob = dob;
}
    public String getName(){
        return name;
    }

    public EMR (String name, String dob, String rfv, double bodyt, double hr,          String diag, String pmeds){
        this.name = name;
        this.dob = dob;
        this.rfv = rfv;
        this.bodyt = bodyt;
        this.hr = hr;
        this.diag = diag;
        this.pmeds = pmeds;

    }
    public String getDob() {
        return dob;
    }

    public void setDob(String dob) {
        this.dob = dob;
    }

    public String getRfv() {
        return rfv;
    }

    public void setRfv(String rfv) {
        this.rfv = rfv;
    }

    public double getBodyt() {
        return bodyt;
    }

    public void setBodyt(double bodyt) {
        this.bodyt = bodyt;
    }

    public double getHr() {
        return hr;
    }

    public void setHr(double hr) {
        this.hr = hr;
    }

    public String getDiag() {
        return diag;
    }

    public void setDiag(String diag) {
        this.diag = diag;
    }

    public String getPmeds() {
        return pmeds;
    }

    public void setPmeds(String pmeds) {
        this.pmeds = pmeds;
    }

    @Override
    public String toString(){
        return"name :" + this.name +"Date of Birth:" + this.dob;
    }
}

这是我的EMR课程代码 一揽子研究健康服务

    public class Studenthealthservices {

    public static void main(String[] args) {

        EMR p1 = new EMR("Colin","10-22-74");
        System.out.printf(p1.toString());

        EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");
        System.out.printf(p2.toString());

    }}

public class EMR {

    private String name;
    private String dob;
    private String rfv;
    private double bodyt;
    private double hr;
    private String diag;
    private String pmeds;

    public void setName(String name) {
        this.name = name;
    }
    public EMR (String name, String dob) {
    this.name = name;
    this.dob = dob;
}
    public String getName(){
        return name;
    }

    public EMR (String name, String dob, String rfv, double bodyt, double hr,          String diag, String pmeds){
        this.name = name;
        this.dob = dob;
        this.rfv = rfv;
        this.bodyt = bodyt;
        this.hr = hr;
        this.diag = diag;
        this.pmeds = pmeds;

    }
    public String getDob() {
        return dob;
    }

    public void setDob(String dob) {
        this.dob = dob;
    }

    public String getRfv() {
        return rfv;
    }

    public void setRfv(String rfv) {
        this.rfv = rfv;
    }

    public double getBodyt() {
        return bodyt;
    }

    public void setBodyt(double bodyt) {
        this.bodyt = bodyt;
    }

    public double getHr() {
        return hr;
    }

    public void setHr(double hr) {
        this.hr = hr;
    }

    public String getDiag() {
        return diag;
    }

    public void setDiag(String diag) {
        this.diag = diag;
    }

    public String getPmeds() {
        return pmeds;
    }

    public void setPmeds(String pmeds) {
        this.pmeds = pmeds;
    }

    @Override
    public String toString(){
        return"name :" + this.name +"Date of Birth:" + this.dob;
    }
}

98是一个字符串，不是双精度的。您需要删除引号：

 EMR p2 = new EMR("Anquan","9-30-77", "stomach ache", 98, 120, "stress", "Tylenol");

98是一个字符串，不是双精度的。您需要删除引号：

 EMR p2 = new EMR("Anquan","9-30-77", "stomach ache", 98, 120, "stress", "Tylenol");

---

当您将double传递给方法（即构造函数）时，不能用引号括住double，否则它们是字符串

将double传递给方法（即构造函数）时，不能用引号括住double，否则它们是字符串

在这条线上

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");

它正在调用这个构造函数

public EMR (String name, String dob, String rfv, double bodyt, double hr,          String diag, String pmeds)

值98和120都是字符串，而不是参数bodyt和hr的两倍

所以，把这行改成

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache",98d, 120d, "stress", "Tylenol");

在这种情况下，双精度的后缀d是可选的。您可以在这行中使用98和120。

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");

它正在调用这个构造函数

public EMR (String name, String dob, String rfv, double bodyt, double hr,          String diag, String pmeds)

值98和120都是字符串，而不是参数bodyt和hr的两倍

所以，把这行改成

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache",98d, 120d, "stress", "Tylenol");

---

在这种情况下，双精度的后缀d是可选的。您可以使用98和120。让我们看看这句话：

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");

让我们看看您试图调用的构造函数：

public EMR (String name, String dob, String rfv, double bodyt, double hr, String diag, String pmeds)

正如您所看到的，构造函数希望bodyt和hr是双精度类型，但在您的语句中98和120是字符串类型，因为引号是字符串文本。要使它们加倍，只需删除引号：

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache",98, 120, "stress", "Tylenol");

---

让我们看看这句话：

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");

让我们看看您试图调用的构造函数：

public EMR (String name, String dob, String rfv, double bodyt, double hr, String diag, String pmeds)

正如您所看到的，构造函数希望bodyt和hr是双精度类型，但在您的语句中98和120是字符串类型，因为引号是字符串文本。要使它们加倍，只需删除引号：

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache",98, 120, "stress", "Tylenol");

---

在对象P2的EMR构造函数中传递值时，在内部传递98和120

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");

这些是双值，不应在双引号内传递。请将代码更改为

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache",98, 120, "stress", "Tylenol");

---

在对象P2的EMR构造函数中传递值时，在内部传递98和120

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache","98", "120", "stress", "Tylenol");

这些是双值，不应在双引号内传递。请将代码更改为

EMR p2 = new EMR("Anquan","9-30-77", "stomach ache",98, 120, "stress", "Tylenol");

---

当涉及到需要许多参数的构造函数和方法时，一个好的经验法则不止3个或4个，最好将参数分组到一个新类型中，并将该类型的实例作为单个参数传递，或者使用生成器模式。当涉及到需要许多参数的构造函数和方法时，一个好的经验法则更有用与3或4相比，最好将参数分组为一个新类型，并将该类型的实例作为单个参数传递，或者使用生成器模式。对于双Java类，甚至可能是98d/120d或98d/120d小写d，对于双Java类，甚至可能是98d/120d或98d/120d小写d，对于双Java类，甚至可能是98d/120d或98d/120d大写d双Java类