Data update

Task/Function-definition/Java/function-definition-2.java

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+import java.util.function.BiFunction;
+import java.util.function.DoubleUnaryOperator;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import java.util.function.UnaryOperator;
+
+public final class FunctionDefinition {
+
+	public static void main(String[] args) {
+		System.out.println(size.apply("Rosetta"));
+		System.out.println(greeting.apply("Joe"));
+		System.out.println(half.applyAsDouble(7));
+		System.out.println(lessThanTen.test(15));
+		System.out.println(add.apply(2, 3));
+	}	
+	
+	private static Function<String, Integer> size = s -> s.length();
+	
+	private static UnaryOperator<String> greeting = s -> "Hello " + s;
+	
+	private static DoubleUnaryOperator half = a -> a / 2;
+	
+	private static Predicate<Integer> lessThanTen = a -> a < 10;
+	
+	private static BiFunction<Integer, Integer, Integer> add = (a, b) -> a + b;	
+
+}