Merge remote-tracking branch 'origin/master'

chenzhuo · chenzhuo · commit bc9a7bfd3b1e · 2019-07-05T09:39:36.000+08:00
# Conflicts:
#	src/main/java/com/concurrent/volatilelearn/VolatileOne.java
diff --git a/src/main/java/com/concurrent/cyclicbarrierlearn/map/HashMapTest.java b/src/main/java/com/concurrent/cyclicbarrierlearn/map/HashMapTest.java
@@ -0,0 +1,34 @@
+package com.concurrent.cyclicbarrierlearn.map;
+
+import java.util.HashMap;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+/**
+ * @author by chenzhuo
+ * @Description
+ * @Date 2019/7/3 13:45
+ **/
+public class HashMapTest {
+
+    public static HashMap hashMap = new HashMap(2);
+
+    public static void main(String[] args) throws InterruptedException {
+        Thread t1 = new Thread(() -> {
+            for (int i = 1; i <= 100000; i++) {
+                int result = i;
+                new Thread(() -> hashMap.put(result, result), "cc" + i).start();
+            }
+
+        });
+        t1.start();
+        Thread.sleep(5000);
+        System.err.println("11");
+        for (int i = 1; i <= 100000; i++) {
+            Integer value = (Integer) hashMap.get(i);
+            if (value == null) {
+                System.out.println(i + "数据丢失");
+            }
+        }
+    }
+}
diff --git a/src/main/java/com/jvm/classloader/relyclass/Test1.java b/src/main/java/com/jvm/classloader/relyclass/Test1.java
@@ -1,19 +1,21 @@
 package com.jvm.classloader.relyclass;
 
+import java.lang.reflect.Field;
+import java.sql.DriverManager;
+
 /**
  * @ClassName Test1
  * @Author chenzhuo
  * @Version 1.0
  * @Date 2019-06-25 22:06
  **/
 public class Test1 {
+
     static {
         System.out.println(Test1.class.getClassLoader());
     }
 
-    public static void main(String[] args) {
-        System.out.println(System.getProperty("sun.boot.class.path"));
-        System.out.println(System.getProperty("java.ext.dirs"));
-        System.out.println(System.getProperty("java.class.path"));
+    public static void main(String[] args) throws  Exception {
+
     }
 }
diff --git a/src/main/java/com/jvm/classloader/relyclass/TestOne.java b/src/main/java/com/jvm/classloader/relyclass/TestOne.java
@@ -18,7 +18,7 @@ public class TestOne {
     }
 
     public static void main(String[] args) {
-        System.out.println("sss");
+
     }
 }
 
diff --git a/src/main/java/com/share/classloader/BootstrapClassloader1.java b/src/main/java/com/share/classloader/BootstrapClassloader1.java
@@ -10,7 +10,9 @@
  **/
 public class BootstrapClassloader1 {
     public static void main(String[] args) {
-        URL[] urls = sun.misc.Launcher.getBootstrapClassPath().getURLs();
+        URL[] urls =
+                sun.misc.Launcher.getBootstrapClassPath()
+                        .getURLs();
         for (URL url : urls) {
             System.out.println(url.toExternalForm());
         }
diff --git a/src/main/java/com/share/classloader/ModuleManager.java b/src/main/java/com/share/classloader/ModuleManager.java
@@ -18,9 +18,15 @@
  * @Date 2019-06-30 14:22
  **/
 public class ModuleManager {
-    private ExecutorService executor = Executors.newFixedThreadPool(8);
-    private Map<String, Class> cache = new ConcurrentHashMap<>();
-    private List<String> moudleList = new ArrayList<>();
+
+    private ExecutorService executor =
+            Executors.newFixedThreadPool(8);
+
+    private Map<String, Class> cache =
+            new ConcurrentHashMap<>();
+
+    private List<String> moudleList =
+            new ArrayList<>();
 
 
     private String getClassName(JarEntry entry) {
@@ -57,7 +63,6 @@ public void init() {
                         if (className == null) {
                             continue;
                         }
-
                         try {
                             Class<?> clazz = classLoader.loadClass(className);
                             //缓存jar 里面的 Class 对象。
diff --git a/src/main/java/com/share/classloader/Test1.java b/src/main/java/com/share/classloader/Test1.java
@@ -17,9 +17,9 @@ public static void main(String[] args) throws Exception {
         System.out.println("Hello World!");
         ModuleManager manager = new ModuleManager();
         List<String> jarList = new ArrayList<String>();
-        jarList.add("/Users/demons/IdeaProjects/JavaCode/moduleB/target/moduleBTest-1.0-SNAPSHOT.jar");
+        jarList.add("/Users/mac/Desktop/JavaCode/moduleB/target/moduleBTest-1.0-SNAPSHOT.jar");
         jarList.add(
-                "/Users/demons/IdeaProjects/JavaCode/moduleA/target/moduleTest-1.0-SNAPSHOT.jar");
+                "/Users/mac/Desktop/JavaCode/moduleA/target/moduleTest-1.0-SNAPSHOT.jar");
         manager.setMoudleList(jarList);
         manager.init();
 
diff --git a/src/main/java/com/share/classloader/Test2.java b/src/main/java/com/share/classloader/Test2.java
@@ -0,0 +1,37 @@
+package com.share.classloader;
+
+import java.util.Random;
+
+/**
+ * @author by chenzhuo
+ * @Description
+ * @Date 2019/7/2 15:22
+ **/
+public class Test2 {
+    //iconst_  <-1,0,1,2 3,4,5>
+    //iconst_m1
+
+    //bipush 255
+    //invokestaic
+    //invoke dy
+    //anewarray
+    public static void main(String[] args) {
+        //anewarray  class com/share/classloader/Test2_1
+        Test2_1[] test2s = new Test2_1[10];
+        String[] strings = new String[10];
+        // L java/lang/Object
+        System.err.println(test2s.getClass().getClassLoader());
+        //newarray
+        int[] ints = new int[10];
+        //Ljava/lang/Object
+        System.err.println(ints.getClass().getClassLoader());
+
+    }
+}
+
+class Test2_1 {
+
+    static {
+        System.err.println("Test2_1 static block");
+    }
+}

Original file line number	Diff line number	Diff line change
`@@ -18,7 +18,7 @@ public class TestOne {`
`18`	`18`	`}`
`19`	`19`
`20`	`20`	`public static void main(String[] args) {`
`21`		`- System.out.println("sss");`
	`21`	`+`
`22`	`22`	`}`
`23`	`23`	`}`
`24`	`24`