18.1.22更新

group16/2562124714/src/Test/TestRunner.java

@@ -1,5 +1,6 @@
 package Test;
 
+import com.coding.basic.linklist.LRUPageFrameTest;
 import org.junit.runner.JUnitCore;
 import org.junit.runner.notification.Failure;
 
@@ -10,7 +11,7 @@
  */
 public class TestRunner {
     public static  void  main(String[] args) {
-        org.junit.runner.Result result = JUnitCore.runClasses(StrutsTest.class);
+        org.junit.runner.Result result = JUnitCore.runClasses(LRUPageFrameTest.class);
         for (Failure failure:result.getFailures()) {
             System.out.println(failure.toString());
         }

group16/2562124714/src/com/coderising/jvm/loader/ClassFileLoader.java

@@ -0,0 +1,115 @@
+package com.coderising.jvm.loader;
+
+import java.io.*;
+import java.util.ArrayList;
+import java.util.List;
+
+
+
+public class ClassFileLoader {
+
+	private List<String> clzPaths = new ArrayList<String>();
+
+	public byte[] readBinaryCode(String className) {
+		//找到文件的具体路径
+		if(clzPaths.size() == 0 || className == "")
+		{
+			return null;
+		}
+
+		String []path = className.split("\\.");
+		String MainPath = "";
+		String FileName = "\\";
+
+		for (int i = 0; i < path.length - 1; i++)
+		{
+			FileName += path[i] + "\\";
+		}
+		FileName += path[path.length - 1] + ".class";
+		System.out.println(FileName);
+
+		for (String item: clzPaths
+			 ) {
+			if (new File(item + FileName).exists())
+			{
+				MainPath += item;
+				break;
+			}
+		}
+
+		if (MainPath == "")
+		{
+			return null;
+		}
+
+		File file = new File(MainPath + FileName);
+		InputStream is = null;
+		byte[] buffer = new byte[(int)file.length()];
+		try
+		{
+			System.out.println(MainPath + FileName);
+			is = new FileInputStream(MainPath + FileName);
+			// read stream data into buffer
+			is.read(buffer);
+
+			return buffer;
+
+
+
+		}
+		catch(Exception e) {
+
+			// if any I/O error occurs
+			e.printStackTrace();
+			return null;
+		} finally {
+
+			// releases system resources associated with this stream
+			if(is!=null)
+				try {
+					is.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+		}
+
+	}
+
+	private byte[] loadClassFile(String clzFileName) {
+
+		return null;
+	}
+
+
+
+	public void addClassPath(String path) {
+		clzPaths.add(path);
+
+	}
+
+	public String getClassPath_V1(){
+
+		return  null;
+	}
+
+	public String getClassPath(){
+		if (clzPaths.size() == 0)
+		{
+			return "";
+		}
+
+		String ClassPath = "";
+		for (String item:
+			 clzPaths) {
+			ClassPath += item + ";";
+		}
+		ClassPath = ClassPath.substring(0, ClassPath.length() - 1); //干掉最后一个 ;
+
+		return ClassPath;
+	}
+
+
+
+
+
+}

group16/2562124714/src/com/coderising/jvm/test/ClassFileloaderTest.java

@@ -0,0 +1,92 @@
+package com.coderising.jvm.test;
+
+import org.junit.After;
+import  org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.coderising.jvm.loader.ClassFileLoader;
+
+
+
+
+
+public class ClassFileloaderTest {
+
+
+	static String path1 = "C:\\Users\\cs\\Desktop\\javacoding2017\\coding2017\\group16\\2562124714\\out\\production\\2562124714";
+	static String path2 = "C:\\temp";
+
+
+
+	@Before
+	public void setUp() throws Exception {		 
+	}
+
+	@After
+	public void tearDown() throws Exception {
+	}
+
+	@Test
+	public void testClassPath(){		
+
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+		loader.addClassPath(path2);
+
+		String clzPath = loader.getClassPath();
+
+		Assert.assertEquals(path1+";"+path2,clzPath);
+
+	}
+
+	@Test
+	public void testClassFileLength() {		
+
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+
+		String className = "com.coderising.jvm.test.EmployeeV1";
+
+		byte[] byteCodes = loader.readBinaryCode(className);
+
+		// 注意：这个字节数可能和你的JVM版本有关系， 你可以看看编译好的类到底有多大
+		Assert.assertEquals(1056, byteCodes.length);
+
+	}
+
+
+    @Test	
+	public void testMagicNumber(){
+    	ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+		String className = "com.coderising.jvm.test.EmployeeV1";
+		byte[] byteCodes = loader.readBinaryCode(className);
+		byte[] codes = new byte[]{byteCodes[0],byteCodes[1],byteCodes[2],byteCodes[3]};
+
+
+		String acctualValue = this.byteToHexString(codes);
+
+		Assert.assertEquals("cafebabe", acctualValue);
+	}
+
+
+
+
+
+
+	private String byteToHexString(byte[] codes ){
+		StringBuffer buffer = new StringBuffer();
+		for(int i=0;i<codes.length;i++){
+			byte b = codes[i];
+			int value = b & 0xFF;
+			String strHex = Integer.toHexString(value);
+			if(strHex.length()< 2){
+				strHex = "0" + strHex;
+			}		
+			buffer.append(strHex);
+		}
+		return buffer.toString();
+	}
+
+}

group16/2562124714/src/com/coderising/jvm/test/EmployeeV1.java

@@ -0,0 +1,28 @@
+package com.coderising.jvm.test;
+
+public class EmployeeV1 {
+
+
+	private String name;
+    private int age;
+
+    public EmployeeV1(String name, int age) {
+        this.name = name;
+        this.age = age;        
+    }    
+
+    public void setName(String name) {
+        this.name = name;
+    }
+    public void setAge(int age){
+    	this.age = age;
+    }
+    public void sayHello() {        
+    	System.out.println("Hello , this is class Employee ");    	
+    }
+    public static void main(String[] args){
+    	EmployeeV1 p = new EmployeeV1("Andy",29);
+    	p.sayHello();    
+
+    }
+}

group16/2562124714/src/com/coding/basic/LinkedList.java

@@ -56,12 +56,35 @@ public Object get(int index){
 		Node node;
 		int i = 0;
 
+		if (index > this.size())
+		{
+			return  null;
+		}
+
 		for (i = 1, node = head; i < index ; i++, node = node.next) {
 		}
 
 		return node.data;
 //		return null;
 	}
+
+	public void set(int index, Object o)
+	{
+		if (o == null || index > this.size())
+		{
+			return;
+		}
+
+		Node node;
+		int i;
+		for (i = 1, node = head; i < index ; i++, node = node.next)
+		{
+		}
+
+		node.data = o;
+
+	}
+
 	public Object remove(int index){
 		Node node;
 		int i = 0;