JavaFX | Insets 类
Insets 类是 JavaFX 的一部分。Insets 类存储矩形区域四条边的内部偏移量。Insets 类继承了 j ava.lang.Object 类。
类的构造函数:
- Insets(双 a) :为所有四个偏移构造一个具有相同值的新 Insets 实例。
- Insets(双顶、双右、双底、双左):用四个不同的偏移量构造一个新的 Insets 实例。
常用方法:
| 方法 | 说明 |
|---|---|
| 等于(java.lang.Object obj) | 指示某个其他对象是否“等于”这个对象。 |
| getBottom() | 返回底部的插图 |
| getLeft（） | 返回左侧的插图 |
| 亮显() | 返回右侧的插图 |
| getTop（） | 返回顶部的插图 |
| hashCode() | 返回类的 hashcode |
以下程序将说明 Insets 类的使用:
-
Java program to create two insets object and display the contents: This program creates two Insets named insets_1 and insets_2. The insets are passed as arguments when the constructor is called. We will get four sides of the insets object using getTop(), getBottom(), getLeft(), getRight() function and display them.
```java // Java program to create two insets // object and display the contents import javafx.geometry.Insets;
public class Insets_1 {
// Main Method public static void main(String args[]) {
// create two insets object Insets insets_1 = new Insets(20.0f); Insets insets_2 = new Insets(20.0f, 40.0f, 60.0f, 70.0f);
// display the insets display(insets_1); display(insets_2); }
// display method public static void display(Insets insets) { double left, right, bottom, top;
// get the insets left = insets.getLeft(); right = insets.getRight(); bottom = insets.getBottom(); top = insets.getTop();
// display the insets System.out.println("Insets of the object"); System.out.println("Left= " + left + ", Right = " + right + ", Bottom = " + bottom + ", Top = " + top); } } ```
输出:
```java Insets of the object Left = 20.0, Right = 20.0, Bottom = 20.0, Top = 20.0 Insets of the object Left = 70.0, Right = 40.0, Bottom = 60.0, Top = 20.0
```
-
Java program to create three objects of insets and display its contents and check whether they are equal to each other or not: This program creates three Insets named insets_1, insets_2, and insets_3. The insets are passed as arguments when the constructor is called. We will get four sides of the insets object using getTop(), getBottom(), getLeft(), getRight() function and display them. We will also check whether the insets are equal to each other using the equals function.
```java // Java program to create three objects of insets // and display its contents and check whether // they are equal to each other or not import javafx.geometry.Insets;
public class Insets_2 {
// Main Method public static void main(String args[]) {
// create three insets objects Insets insets_1 = new Insets(120.0f, 150.0f, 40.0f, 60.0f);
Insets insets_2 = new Insets(120.0f, 150.0f, 40.0f, 60.0f);
Insets insets_3 = new Insets(200.0f, 120.0f, 60.0f, 40.0f);
// display the 3 insets display(insets_1); display(insets_2); display(insets_3);
// check whether any insets is equal to other or not System.out.println("Insets 1 equals Insets 2 = " + insets_1.equals(insets_2));
System.out.println("Insets 2 equals Insets 3 = " + insets_2.equals(insets_3));
System.out.println("Insets 3 equals Insets 1 = " + insets_3.equals(insets_1)); }
// display Method public static void display(Insets insets) { double left, right, bottom, top;
// get the insets left = insets.getLeft(); right = insets.getRight(); bottom = insets.getBottom(); top = insets.getTop();
// display the insets System.out.println("Insets of the object"); System.out.println("Left= " + left + ", Right= " + right + ", Bottom= " + bottom + ", Top = " + top); } } ```
输出:
```java Insets of the object Left= 60.0, Right= 150.0, Bottom= 40.0, Top = 120.0 Insets of the object Left= 60.0, Right= 150.0, Bottom= 40.0, Top = 120.0 Insets of the object Left= 40.0, Right= 120.0, Bottom= 60.0, Top = 200.0 Insets 1 equals Insets 2 = true Insets 2 equals Insets 3 = false Insets 3 equals Insets 1 = false
```
注意:上述程序可能无法在在线 IDE 中运行。请使用离线编译器。
参考:https://docs . Oracle . com/JavaFX/2/API/JavaFX/geometry/insets . html
版权属于：月萌API www.moonapi.com，转载请注明出处
