| /* |
| * 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; |
| } |
| } |