package ch02;
public class Plastic {
@Override
public String toString() {
return "재료는 plastic입니다";
}
}
package ch02;
public class Powder {
@Override
public String toString() {
return "재료는 powder입니다.";
}
}
package ch02;
public class ThreeDPrinter1 {
private Powder material;
//powder 참조타입
public Powder getMaterial() {
return material;
}
public void setMaterial(Powder material) {
this.material = material;
}
}
package ch02;
public class ThreeDPrinter2 {
private Plastic material;
public Plastic getMaterial() {
return material;
}
public void setMaterial(Plastic material) {
this.material = material;
}
}
package ch02;
public class ThreeDPrinter3 {
private Object material;
public Object getMaterial() {
return material;
}
public void setMaterial(Object material) {
this.material = material;
}
}