Java 中的数组 setShort()方法
原文:https://www . geesforgeks . org/array-set short-method-in-Java/
java . lang . reflect . array . setshort()是 Java 中的一个内置方法，用于将指定的短值设置为给定对象数组的指定索引。
语法:
Array.setShort(Object []array,int index, short value)
参数:该方法取 3 个参数:
- 数组:这是一个将要更新的 Object 类型的数组。
- 索引:这是要更新的数组的索引。
- 值:这是在给定的数组的给定索引处设置的短值。
异常:该方法抛出以下异常:
- 空指针异常–当数组为空时。
- IllegalArgumentException–当给定的对象数组不是数组时。
-
ArrayIndexOutOfBoundsException – if the given index is not in the range of the size of the array.
下面是 Array.setShort()方法的实现:
程序 1 :
```java // Java code to demonstrate // setShort() method of Array class
import java.lang.reflect.Array; public class GfG { // main method public static void main(String[] args) {
// Declaring and defining Short array short b[] = {1,2,3,4}; System.out.print("Befor Set : "); // printing the array for(short x : b){ System.out.print(x + " "); } short value = 10; // set method of class Array Array.setShort(b, 1, value);
System.out.print("\nAfter Set : "); // printing array for(short x : b){ System.out.print(x + " "); }
} } ```
Output:
```java Befor Set : 1 2 3 4 After Set : 1 10 3 4
```
程序 2 : 演示 java.lang.NullPointerException
```java // Java code to demonstrate // setShort() method of Array class
import java.lang.reflect.Array; public class GfG { // main method public static void main(String[] args) {
// Declaring and defining Short array to null short b[] = null; try{ short s = 10; Array.setShort(b,5,s); } catch(Exception e){ System.out.println("Exception : " + e); }
} } ```
Output:
```java Exception : java.lang.NullPointerException
```
程序 3: 演示 Java . lang . arrayindexoutofboundsexception
```java // Java code to demonstrate // setShort() method of Array class
import java.lang.reflect.Array; public class GfG { // main method public static void main(String[] args) {
// Declaring and defining Short array short b[] = {1,2,3,4}; try{ short s = 10; Array.setShort(b,5,s); } catch(Exception e){ System.out.println("Exception : " + e); }
} } ```
Output:
```java Exception : java.lang.ArrayIndexOutOfBoundsException
```
程序 4: 演示 Java . lang . illegalargumentexception
```java // Java code to demonstrate // setShort() method of Array class import java.lang.reflect.Array; public class GfG { // main method public static void main(String[] args) {
// Declaring and defining Short variable short b = 1; try{ short s = 10; Array.setShort(b,5,s); } catch(Exception e){ System.out.println("Exception : " + e); }
} } ```
Output:
```java Exception : java.lang.IllegalArgumentException: Argument is not an array
```
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