-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathPrimitiveFunction.java
More file actions
28 lines (22 loc) · 1.18 KB
/
Copy pathPrimitiveFunction.java
File metadata and controls
28 lines (22 loc) · 1.18 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
package lambda.lambda4;
import java.util.function.IntFunction;
import java.util.function.IntToLongFunction;
import java.util.function.IntUnaryOperator;
import java.util.function.ToIntFunction;
public class PrimitiveFunction {
public static void main(String[] args) {
// 기본형 매개변수, IntFunction, LongFunction, DoubleFunction
IntFunction<String> function = i -> "숫자 : " + i;
System.out.println("function.apply(10) = " + function.apply(10));
// 기본형 반환, ToIntFunction, ToLongFunction, ToDoubleFuntion
ToIntFunction<String> toIntFunction = s -> Integer.parseInt(s);
System.out.println("toIntFunction.applyAsInt(10) = " + toIntFunction.applyAsInt("10"));
// 기본형 매개변수, 기본형 반환
IntToLongFunction intToLongFunction = x-> (long)x*100;
System.out.println("intToLongFunction.applyAsLong(10) = " + intToLongFunction.applyAsLong(10));
// IntUnaryOperator : int -> int
IntUnaryOperator intUnaryOperator = x -> x*10;
System.out.println("intUnaryOperator.applyAsInt(10) = " + intUnaryOperator.applyAsInt(10));
// IntConsumer, IntSupplier, IntPredicate 등
}
}