-
Notifications
You must be signed in to change notification settings - Fork 0
/
AnonymousFunctions.java
52 lines (40 loc) · 1.43 KB
/
AnonymousFunctions.java
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
class AnonymousFunctions {
@FunctionalInterface
public interface FunctionWithNoArgumentsAndNoResult {
public abstract void runSelf();
}
@FunctionalInterface
public interface FunctionWithResult {
public abstract int runSelf();
}
@FunctionalInterface
public interface FunctionWithArguments {
public abstract void runSelf(int number, String text);
}
public static void main(String[] args) {
FunctionWithNoArgumentsAndNoResult simpleFunction = () -> System.out.println("Simple function.");
FunctionWithNoArgumentsAndNoResult functionWithLocalVariable = () -> {
int i = 4;
System.out.println(String.format("A function with a local variable: %d", i));
};
FunctionWithResult functionReturningValue = () -> {
System.out.println("A function returning value.");
return 9;
};
FunctionWithArguments functionWithArguments = (int number, String text) -> {
System.out.println("A function with some arguments:\n"
+ String.format("number: %d\n", number)
+ String.format("text: %s", text));
};
int i;
System.out.println("Functions:\n");
simpleFunction.runSelf();
System.out.println();
functionWithLocalVariable.runSelf();
System.out.println();
i = functionReturningValue.runSelf();
System.out.println(String.format("returned value: %d\n", i));
functionWithArguments.runSelf(6, "orange");
System.out.println();
}
}