Question

java MyEclipse 提示Type mismatch: cannot convert from int to String

下面是超类源代码
package boat;
public class Boat {
private String stateNo;
private double length;
private String facturer;
private int year;
public Boat(String astateNo,double alength,String afacturer,int ayear)
{setstateNo(astateNo);
setlength(alength);
setfacturer(afacturer);
setyear(ayear);}
public void setstateNo(String astateNo)
{stateNo=astateNo;}
public void setlength(double alength)
{length=alength;}
public void setfacturer(String afacturer)
{facturer=afacturer;}
public void setyear(int ayear)
{year=ayear;}
public String getstateNo()
{return stateNo;}
public double getlength()
{return length;}
public String getfacturer()
{return facturer;}
public int getyear()
{return year;}}
下面是powerboat类
package boat;
public class Sailboat extends Boat{
private double keelDepth;
private int noSails;
private String motorType;
public Sailboat(String astateNo,double alength,String afacturer,int ayear,
double akeelDepth,int anosails,String amotorType)
{super(astateNo,alength,afacturer,ayear);
setkeelDepth(akeelDepth);
setnoSails(anosails);
setmotorType(amotorType);}
public void setkeelDepth(double akeelDepth)
{keelDepth=akeelDepth;}
public void setnoSails(int anosails)
{noSails=anosails;}
public void setmotorType(String amotorType)
{motorType=amotorType;}
public double getkeelDepth()
{return keelDepth;}
public int getnoSails()
{return noSails;}
public String getmotorType()
{return motorType;}
}
下面是有错误的test类（部分）
{Sailboat fb=new Sailboat("mo123456",28,"tartan",1998,4.11,2,"inboard");

Answer 1

两者的结构类型不一致，不可强制赋值，可以先实现转化类型

Answer 2

不是告诉你错误了，不能把int转换成String，你还要转？

Answer 3

年月日为什么要用double和int？从没见过这么处理的，都是传日期字符串，然后处理字符串。

Answer 4

强转出错了