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author
sshfuture
committed
jvm虚拟机 第一次作业
1 parent f06842f commit 7d5b5ce

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5 files changed

+73
-44
lines changed

5 files changed

+73
-44
lines changed

‎group18/744888802/src/main/java/com/TestMain.java

Lines changed: 2 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -1,18 +1,13 @@
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package com;
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/**
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* Created by hushuai on 2017/3/9.
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*/
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public class TestMain {
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public static void main(String[] args) {
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System.out.println(111);
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}
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//
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// class downloadThread implements Runnable{
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// @Override
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// public void run() {
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//
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// }
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// }
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}

‎group18/744888802/src/main/java/com/coderising/jvm/loader/ClassFileLoader.java

Lines changed: 68 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,68 @@
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package com.coderising.jvm.loader;
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import java.io.*;
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import java.util.ArrayList;
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import java.util.List;
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public class ClassFileLoader {
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private List<String> clzPaths = new ArrayList<String>();
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public byte[] readBinaryCode(String className) {
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String filePath = getClassPath()+className.replace(".","\\")+".class";
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byte[] itemBuf = null;
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File file = new File(filePath);
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InputStream in = null;
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try {
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in = new FileInputStream(file);
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itemBuf = new byte[(int)file.length()];
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in.read(itemBuf, 0, (int)file.length());
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in.close();
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} catch (Exception e) {
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e.printStackTrace();
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}finally {
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if (in != null) {
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try {
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in.close();
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} catch (IOException e1) {
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}
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}
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}
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return itemBuf;
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}
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public void addClassPath(String path) {
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clzPaths.add(path);
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}
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public String getClassPath(){
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String result = null;
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StringBuffer sb = new StringBuffer();
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for(String classPath : this.clzPaths){
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sb.append(classPath+";");
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}
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if(sb.length() != 0){
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result = sb.toString();
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result = result.substring(0,result.length()-1);
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}
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return result;
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}
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}

‎group18/744888802/src/main/java/mini-jvm/src/com/coderising/jvm/test/ClassFileloaderTest.java renamed to ‎group18/744888802/src/main/java/com/coderising/jvm/test/ClassFileloaderTest.java

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -14,7 +14,7 @@
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public class ClassFileloaderTest {
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static String path1 = "C:\\Users\\liuxin\\git\\coding2017\\liuxin\\mini-jvm\\bin";
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static String path1 = "D:\\mywork\\coding2017\\group18\\744888802\\target\\classes";
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static String path2 = "C:\temp";
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@@ -46,7 +46,7 @@ public void testClassFileLength() {
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ClassFileLoader loader = new ClassFileLoader();
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loader.addClassPath(path1);
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String className = "com.coderising.jvm.test.EmployeeV1";
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String className = "\\com.coderising.jvm.test.EmployeeV1";
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byte[] byteCodes = loader.readBinaryCode(className);
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@@ -60,7 +60,7 @@ public void testClassFileLength() {
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public void testMagicNumber(){
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ClassFileLoader loader = new ClassFileLoader();
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loader.addClassPath(path1);
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String className = "com.coderising.jvm.test.EmployeeV1";
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String className = "\\com.coderising.jvm.test.EmployeeV1";
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byte[] byteCodes = loader.readBinaryCode(className);
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byte[] codes = new byte[]{byteCodes[0],byteCodes[1],byteCodes[2],byteCodes[3]};
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‎group18/744888802/src/main/java/mini-jvm/src/com/coderising/jvm/test/EmployeeV1.java renamed to ‎group18/744888802/src/main/java/com/coderising/jvm/test/EmployeeV1.java

File renamed without changes.

‎group18/744888802/src/main/java/mini-jvm/src/com/coderising/jvm/loader/ClassFileLoader.java

Lines changed: 0 additions & 34 deletions
This file was deleted.

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