Question

我有以下代码：

public class Rectangle extends java.awt.Rectangle
{
    private Position position;


public Rectangle(Rectangle toCopy)
{
    this.position = toCopy.position;
}

public Rectangle(Position position, int width, int height)
{
    super(width, height);
    this.position = position;
}

这很好用，但我需要宽度和高度才能浮动。问题是java.awt.Rectangle中的构造函数接受宽度和高度的int类型。有没有办法在构造函数中使宽度和高度浮动？

Answer 1

我相信你正在寻找casting。这样您就可以将float变成int。您的示例中的实现将是：

public Rectangle(Position position, float width, float height) // Changed types to float
{
    super((int) width, (int) height); // Cast from float to int
    this.position = position;

    // width & height are floats, like requested
}

Answer 2

使用如下所示的转换将int转换为浮点数：float myfloat = (float) myInt;

所以改变这个：

      public Rectangle(Position position, int width, int height)
{
super(width, height);
this.position = position;
}

To This：

   public Rectangle(Position position, int width, int height)
{
super((float) width,(float) height);
this.position = position;
}

Answer 3

也许你可以试试这个：

int i;
float f = i * 1.0f;

在构造函数中将int转换为float

3 个答案: