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Array getFloat() Method in Java

Last Updated : 30 Nov, 2018
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The java.lang.reflect.Array.getFloat() is an inbuilt method of Array class in Java and is used to return the element present at the given index from the specified Array as Float. Syntax: 
 Array.getFloat(Object []array, int index)
Parameters: This method accepts two mandatory parameters:
  • array: The object array whose index is to be returned.
  • index: The particular index of the given array. The element at 'index' in the given array is returned.
Return Value: This method returns the element of the array as byte. Exceptions: This method throws following exceptions:
  • NullPointerException - when the array is null.
  • IllegalArgumentException - when the given object array is not an Array.
  • ArrayIndexOutOfBoundsException - if the given index is not in the range of the size of the array.
Note: Typecast isn't necessary as the return type is float. Below programs illustrate the getFloat() method of Array class. Program 1: Java 
// Java code to demonstrate getFloat() method of Array class import java.lang.reflect.Array; public class GfG {  // main method  public static void main(String[] args)  {  // Declaring and defining a float array  float a[] = { 1.0f, 2.0f, 3.0f };  // Traversing the array  for (int i = 0; i < 3; i++) {  // Array.getBoolean() method  float x = Array.getFloat(a, i);  // Printing the values  System.out.print(x + " ");  }  } }
Output: 
 1.0 2.0 3.0
Program 2: Java 
// Java code to demonstrate getFloat() method of Array class import java.lang.reflect.Array; public class GfG {  // main method  public static void main(String[] args)  {  // Declaring and defining a float array  float a[] = { 1.0f, 2.0f, 3.0f };  try {  float x = Array.getFloat(a, 4);  }  catch (Exception e) {  System.out.println("Exception : " + e);  }  } }
Output: 
 Exception : java.lang.ArrayIndexOutOfBoundsException
Program 3: Java 
// Java code to demonstrate getFloat() method of Array class import java.lang.reflect.Array; public class GfG {  // main method  public static void main(String[] args)  {  // Declaring and defining a float array as null  float a[] = null;  try {  float x = Array.getFloat(a, 4);  }  catch (Exception e) {  System.out.println("Exception : " + e);  }  } }
Output: 
 Exception : java.lang.NullPointerException
Program 4: Java 
// Java code to demonstrate getFloat() method of Array class import java.lang.reflect.Array; public class GfG {  // main method  public static void main(String[] args)  {  // Declaring and defining a float variable  float a = 1.0f;  try {  float x = Array.getFloat(a, 4);  }  catch (Exception e) {  System.out.println("Exception : " + e);  }  } }
Output: 
 Exception : java.lang.IllegalArgumentException: Argument is not an array
Program 5: Java 
// Java code to demonstrate getFloat() method of Array class import java.lang.reflect.Array; public class GfG {  // main method  public static void main(String[] args)  {  // Declaring and defining a String array  String s[] = { "Geeks", "for", "Geeks" };  try {  float x = Array.getFloat(s, 4);  }  catch (Exception e) {  System.out.println("Exception : " + e);  }  } }
Output: 
 Exception : java.lang.IllegalArgumentException: Argument is not an array

S
ShivamKD
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