Array getBoolean() Method in Java
Last Updated :
30 Nov, 2018
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The java.lang.reflect.Array.getBoolean() returns the given index from the specified Array as a short.
Syntax:
Java
Java
Java
Java
Array.getBoolean(Object []array,int index)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.
- 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.
// Java code to demonstrate getBoolean() method of Array class
import java.lang.reflect.Array;
public class GfG {
// main method
public static void main(String[] args) {
// Declaring and defining a boolean array
boolean a[] = {true,true,false};
// Traversing the array
for(int i = 0;i<3;i++){
// Array.getBoolean() method
boolean x = Array.getBoolean(a, i);
// Printing the values
System.out.print(x + " ");
}
}
}
Output:
Program 2:
true true false
// Java code to demonstrate getBoolean() method in Array
import java.lang.reflect.Array;
public class GfG {
// main method
public static void main(String[] args) {
// Declaring and defining a boolean array
boolean a[] = {true,true,false};
try {
// invalid index
boolean x = Array.getBoolean(a, 6);
System.out.println(x);
} catch (Exception e) {
// throws Exception
System.out.println("Exception : " + e);
}
}
}
Output:
Program 3:
Exception : java.lang.ArrayIndexOutOfBoundsException
// Java code to demonstrate getBoolean() method in Array
import java.lang.reflect.Array;
public class GfG {
// main method
public static void main(String[] args) {
// Declaring and defining a boolean array to null
boolean a[] = null;
try {
// null Object array
boolean x = Array.getBoolean(a, 6);
System.out.println(x);
} catch (Exception e) {
// throws Exception
System.out.println("Exception : " + e);
}
}
}
Output:
Program 4:
Exception : java.lang.NullPointerException
// Java code to demonstrate getBoolean() method in Array
import java.lang.reflect.Array;
public class GfG {
// main method
public static void main(String[] args) {
// Declaring and defining a boolean variable
boolean a = true;
try {
// illegalArgument
boolean x = Array.getBoolean(a, 6);
System.out.println(x);
} catch (Exception e) {
// throws Exception
System.out.println("Exception : " + e);
}
}
}
Output:
Exception : java.lang.IllegalArgumentException: Argument is not an array
