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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package pkg;
import java.util.*;
import java.util.function.IntBinaryOperator;
import java.util.function.Supplier;
public class TestClassLambda {
public int field = 0;
public void testLambda() {
List<Integer> list = Arrays.asList(1, 2, 3, 4, 5, 6, 7);
int b = (int)Math.random();
list.forEach(n -> {
int a = 2 * n;
System.out.println(a + b + field);
});
}
public void testLambda1() {
int a = (int)Math.random();
Runnable r1 = () -> { System.out.println("hello1" + a); };
Runnable r2 = () -> { System.out.println("hello2" + a); };
}
public void testLambda2() {
reduce((left, right) -> Math.max(left, right));
}
public void testLambda3() { // IDEA-127301
reduce(Math::max);
}
public void testLambda4() {
reduce(TestClassLambda::localMax);
}
public void testLambda5() {
String x = "abcd";
function(x::toString);
}
public void testLambda6() {
List<String> list = new ArrayList<String>();
int bottom = list.size() * 2;
int top = list.size() * 5;
list.removeIf(s -> (bottom >= s.length() && s.length() <= top));
}
public static OptionalInt reduce(IntBinaryOperator op) {
return null;
}
public static String function(Supplier<String> supplier) {
return supplier.get();
}
public static int localMax(int first, int second) {
return 0;
}
}
|