JAVA程序设计？

public class Car {
String make;
String model;
int year;

public String getMake() {
return make;
}
public void setMake(String make) {
this.make = make;
}
public String getModel() {
return model;
}
public void setModel(String model) {
this.model = model;
}
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
public Car(String make,String model,int year){
this.make=make;
this.model=model;
this.year=year;
}
public String toString() {
return "Car [make=" + make + ", model=" + model + ", year=" + year
+ "]";
}

public boolean isAntique(int year){
boolean flag=false;
int newYear=2019;
int da;
da=newYear-year;
if(da>45){
flag=true;
return flag;
}
return flag;
}
}