The concat() method of Booleans Class in the Guava library is used to concatenate the values of many arrays into a single array. These boolean arrays to be concatenated are specified as parameters to this method.
For example: concat(new boolean[] {a, b}, new boolean[] {}, new boolean[] {c} returns the array {a, b, c}.
Syntax :
public static boolean[] concat(boolean[]... arrays)
Parameter: This method accepts arrays as parameter which is the boolean arrays to be concatenated by this method.
Return Value: This method returns a single boolean array which contains all the specified boolean array values in its original order.
Below programs illustrate the use of concat() method:
Example-1 :
// Java code to show implementation of // Guava's Booleans.concat() method import com.google.common.primitives.Booleans;
import java.util.Arrays;
class GFG {
// Driver's code
public static void main(String[] args)
{
// Creating 2 Boolean arrays
boolean [] arr1 = { true , false , true };
boolean [] arr2 = { false , false , false , true };
// Using Booleans.concat() method to combine
// elements from both arrays into a single array
boolean [] res = Booleans.concat(arr1, arr2);
// Displaying the single combined array
System.out.println(Arrays.toString(res));
}
} |
[true, false, true, false, false, false, true]
Example-2 :
// Java code to show implementation of // Guava's Booleans.concat() method import com.google.common.primitives.Booleans;
import java.util.Arrays;
class GFG {
// Driver's code
public static void main(String[] args)
{
// Creating 4 boolean arrays
boolean [] arr1 = { true , false , false };
boolean [] arr2 = { true , true };
boolean [] arr3 = { false , false , false };
boolean [] arr4 = { false , true };
// Using Booleans.concat() method to combine
// elements from both arrays into a single array
boolean [] res
= Booleans.concat(arr1, arr2, arr3, arr4);
// Displaying the single combined array
System.out.println(Arrays.toString(res));
}
} |
[true, false, false, true, true, false, false, false, false, true]