Java AWT |维度类
维度类是 Java AWT 的一部分。它以整数和双精度形式包含组件的高度和宽度。Dimension 类的用途是 Java AWT 和 Swing 的很多函数都返回维度对象。
维度类的构造函数
- 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) :会创建一个指定高度和宽度的新对象。
维度类的方法
| 方法 | 说明 | | --- | --- | | 等于(对象 0) | 检查两个尺寸对象是否相等。 | | 得到海特 （） | 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 hashcode。 | | setSize(维 d) | 将对象的大小设置为指定的尺寸 | | 设置大小(双倍宽度，双倍高度) | 将高度和宽度设置为指定的双精度值 | | 设置大小(整数宽度，整数高度) | 将高度和宽度设置为指定的整数值 |以下程序说明了维度类:
- 显示维度类(整数精度)功能的程序。
Java 语言(一种计算机语言，尤用于创建网站)
// 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());
}
}
Output
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
Output:
Dimension d and d1 are equal = false
Dimension d and d1 are equal = true
Hashcode of Dimension d = 1860
Dimesnion d Height = 30.0 Width= 30.0
Dimesnion d1 Height = 30.0 Width= 20.0
Dimesnion d2 Height = 30.0 Width= 20.0
- 显示尺寸类(双精度)功能的程序。
Java 语言(一种计算机语言，尤用于创建网站)
// 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());
}
}
Output
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
Output:
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
Dimesnion d Height = 31.0 Width = 31.0
Dimesnion d1 Height = 30.0 Width = 20.0
Dimesnion d2 Height = 30.0 Width = 20.0
参考:https://docs . Oracle . com/javase/7/docs/API/Java/awt/dimension . html
版权属于：月萌API www.moonapi.com，转载请注明出处
