BooleanSupplier Interface is a part of the java.util.function package which is introduced in Java 8. It is an in-built Functional Interface. This function doesn’t expect any input but produces a boolean-valued output. In this post, we are going to see several implementations of BooleanSupplier Interface by using different examples.
BooleanSupplier Interface in Java 8 Examples...!!! Share on X
Look at BooleanSupplier Javadoc description below:
As you’ve seen in the above screenshot, BooleanSupplier Interface contains only the following function:
boolean getAsBoolean();
This method represents a supplier of boolean-valued results. This is the boolean-producing primitive specialization of Supplier.
Example:
import java.util.function.BooleanSupplier;
public class BooleanSupplierInterfaceJava8Example1 {
public static void main(String[] args) {
BooleanSupplier bsObj1 = () -> true;
BooleanSupplier bsObj2 = () -> 5 > 50;
BooleanSupplier bsObj3 = () -> "techndeck.com".equals("justanordinarywriter.com");
System.out.println("Result of bsObj1: " + bsObj1.getAsBoolean());
System.out.println("Result of bsObj2: " + bsObj2.getAsBoolean());
System.out.println("Result of bsObj3: " + bsObj3.getAsBoolean());
}
}
Java 8 BooleanSupplier Interface is an absolute useful addition as part of ‘Functional Interfaces’ and can serve variety of purposes. It is quite powerful as it can be used as a higher order functions through lambda functions and above examples could help you to get better idea on how to implement it.
BooleanSupplier Interface in Java 8 Examples...!!! Share on X
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