Java AWT Dimension用法及代码示例

Dimension 类是 Java AWT 的一部分。它包含整数和双精度的组件的高度和宽度。 Dimension 类的用途是 Java AWT 和 Swing 的许多函数都返回维度对象。

Dimension 类的构造函数

Dimension()：它将创建一个高度和宽度设置为零的新对象。
尺寸(尺寸d)：它将创建一个与指定对象具有相同高度和宽度的新对象。
尺寸(int w，int h)：它将创建一个具有指定高度和宽度的新对象。

Methods of Dimension Class

方法	解释
equals(Object o)	检查二维对象是否相等。
getHeight()	返回尺寸对象的高度
getWidth()	返回尺寸对象的宽度
getSize()	返回维度对象的大小。
hashCode()	返回维度的哈希码。
setSize(Dimension d)	将对象的大小设置为指定尺寸
setSize(double width, double height)	将高度和宽度设置为指定的双精度值
setSize(int width, int height)	将高度和宽度设置为指定的整数值

以下示例程序旨在说明 Dimension 类:

程序显示尺寸类(整数精度)的函数。

Java


// Java Program to show the functions
// of dimension class(Integer precision)
import java.awt.*;
class dimen {
    // Main Method
    public static void main(String args[])
    {
        // create dimension
        Dimension d = new Dimension();
        Dimension d1 = new Dimension(20, 30);
        Dimension d2 = new Dimension(d1);
        // set height and width of dimension d
        d.setSize(30, 30);
        // equating dimensions
        System.out.println("Dimension d and d1 " + 
                    "are equal = " + d.equals(d1));
                     
        System.out.println("Dimension d and d1 " + 
                "are equal = " + d1.equals(d2));
        // print hashcode
        System.out.println("Hashcode of Dimension " + 
                            "d = " + d.hashCode());
        // display dimension
        display(d, "Dimension d");
        display(d1, "Dimension d1");
        display(d2, "Dimension d2");
    }
    // display dimension
    public static void display(Dimension d, String s)
    {
        System.out.println(s +" Height = " + d.getHeight() + 
                                " Width= " + d.getWidth());
    }
}

输出

Dimension d and d1 are equal = false
Dimension d and d1 are equal = true
Hashcode of Dimension d = 1860
Dimension d Height = 30.0 Width= 30.0
Dimension d1 Height = 30.0 Width= 20.0
Dimension d2 Height = 30.0 Width= 20.0

输出：

Dimension d and d1 are equal = false
Dimension d and d1 are equal = true
Hashcode of Dimension d = 1860
Dimension d Height = 30.0 Width= 30.0
Dimension d1 Height = 30.0 Width= 20.0
Dimension d2 Height = 30.0 Width= 20.0

显示尺寸类(双精度)函数的程序。

Java


// Java Program to show the functions
// of dimension class(Double precision)
import java.awt.*;
class dimen {
     
    // Main Method
    public static void main(String args[])
    {
         
        // create dimension
        Dimension d = new Dimension();
        Dimension d1 = new Dimension(20, 30);
        Dimension d2 = new Dimension(d1);
        // set height and width of dimension d
        d.setSize(30.3, 30.45);
        // equating dimensions
        System.out.println("Dimension d and d1" + 
                "are equal = " + d.equals(d1));
                     
        System.out.println("Dimension d and d1" + 
                "are equal = " + d1.equals(d2));
        // print hashcode
        System.out.println("Hashcode of Dimension d = "
                                    + d.hashCode());
        // display dimension
        System.out.println("See the values are rounded" + 
                        "off to ceiling in dimension d");
        display(d, "Dimension d");
        display(d1, "Dimension d1");
        display(d2, "Dimension d2");
    }
    // display dimension
    public static void display(Dimension d, String s)
    {
        System.out.println(s + " Height = " + d.getHeight() 
                            + " Width = " + d.getWidth());
    }
}

输出

Dimension d and d1are equal = false
Dimension d and d1are equal = true
Hashcode of Dimension d = 1984
See the values are roundedoff to ceiling in dimension d
Dimension d Height = 31.0 Width = 31.0
Dimension d1 Height = 30.0 Width = 20.0
Dimension d2 Height = 30.0 Width = 20.0

输出：

Dimension d and d1are equal = false
Dimension d and d1are equal = true
Hashcode of Dimension d = 1984
See the values are roundedoff to ceiling in dimension d
Dimension d Height = 31.0 Width = 31.0
Dimension d1 Height = 30.0 Width = 20.0
Dimension d2 Height = 30.0 Width = 20.0

参考：https://docs.oracle.com/javase/7/docs/api/java/awt/Dimension.html

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注：本文由纯净天空筛选整理自andrew1234大神的英文原创作品 Java AWT | Dimension Class。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。