All things were made by him

JavaEEPRO · web-flow · commit bbefacc27480 · 2018-01-03T14:24:04.000+02:00
All things were made by him; and without him was not any thing made that was made. (John 1:3)
diff --git a/Collections/task34/task3405/Solution.java b/Collections/task34/task3405/Solution.java
@@ -0,0 +1,105 @@
+
+//All things were made by him; and without him was not any thing made that was made. (John 1:3)
+
+package com.javarush.task.task34.task3405;
+
+import java.lang.ref.SoftReference;
+import java.util.ArrayList;
+import java.util.List;
+
+/* 
+Мягкие ссылки
+*/
+public class Solution {
+    public static Helper helper = new Helper();
+
+    public static class Monkey {
+        private String name;
+
+        public Monkey(String name) {
+            this.name = name;
+        }
+
+        protected void finalize() {
+            Helper.isFinalized = true;
+            System.out.format("Bye-Bye, %s!\n", name);
+        }
+    }
+
+    public static void main(String args[]) throws InterruptedException {
+        helper.startTime();
+
+        Monkey monkey = new Monkey("Simka");
+
+        SoftReference <Monkey> reference = new SoftReference<Monkey>(monkey);//Add reference here
+
+        helper.callGC();
+
+        monkey = null;
+
+        helper.callGC();
+        helper.heapConsuming();
+
+        if (reference.get() == null)
+            System.out.println("Finalized");
+
+        helper.finish();
+    }
+
+    public static class Helper {
+        public static boolean isFinalized;
+
+        private long startTime;
+
+        void startTime() {
+            this.startTime = System.currentTimeMillis();
+        }
+
+        int getTime() {
+            return (int) (System.currentTimeMillis() - startTime) / 1000;
+        }
+
+        void callGC() throws InterruptedException {
+            System.gc();
+            Thread.sleep(1000);
+        }
+
+        void heapConsuming() {
+            try {
+                List<Solution> heap = new ArrayList<Solution>(100000);
+                while (!isFinalized) {
+                    heap.add(new Solution());
+                }
+            } catch (OutOfMemoryError e) {
+                System.out.println("Out of memory error raised");
+            }
+        }
+
+        public void finish() {
+            System.out.println("Done");
+            System.out.println("It took " + getTime() + " sec");
+        }
+    }
+}
+
+/*
+Мягкие ссылки
+
+Разберись в примере.
+
+Внутри метода main после создания объекта типа Monkey создай мягкую ссылку (SoftReference) на него.
+
+
+
+
+
+Требования:
+
+1. В методе main должен быть создан объект типа Monkey с именем "Simka".
+
+2. В методе main должен быть создан SoftReference на объект monkey.
+
+3. Класс Monkey должен быть публичным.
+
+4. Класс Monkey должен быть статическим.
+*/
