為什么封裝出現(xiàn)問題，求各位大神指點(diǎn)
class Telphone
{
????????private float screen;
????????private float cpu;
????????private float mem;
public float getScreen()
{
return screen;
}
public void setScreen(float newScreen)
{
screen=newScreen;
}
public Telphone()
{
System.out.println("無參");
}
public Telphone(float newScreen,float newCpu,float newMem)
{
screen=newScreen;
cpu=newCpu;
? ? mem=newMem;
System.out.println("有參");
? ?}
}
class InitailTelphone
{
public static void main(String[] args)
{
Telphone phone=new Telphone();
Telphone phone2=new Telphone(5.0f,1.4f,2.0f);
?phone2.setScreen(6.0f);
System.out.println("screen:"+phone2.getScreen());
}
}
2019-01-09
這些代碼一點(diǎn)問題沒有！如果你報錯那就是你把他們都寫道一個類中了。
2018-07-19
public Telphone()沒有指定類型?public void Telphone()