如何讀JAVA源碼

本來不想回答，翻到下面那些答復(fù)實(shí)在看不過去，就花點(diǎn)功夫整理下吧，希望對(duì)有人心能有幫助。

創(chuàng)新互聯(lián)是一家專注于做網(wǎng)站、成都網(wǎng)站建設(shè)與策劃設(shè)計(jì),馬尾網(wǎng)站建設(shè)哪家好?創(chuàng)新互聯(lián)做網(wǎng)站,專注于網(wǎng)站建設(shè)10年,網(wǎng)設(shè)計(jì)領(lǐng)域的專業(yè)建站公司;建站業(yè)務(wù)涵蓋:馬尾等地區(qū)。馬尾做網(wǎng)站價(jià)格咨詢:028-86922220

閱讀分析源代碼，一些有效的方法是：

1、閱讀源代碼的說明文檔和API文檔。

2、如果源代碼有用法示例或向?qū)?，先閱讀這個(gè)。

3、了解整個(gè)項(xiàng)目的模塊結(jié)構(gòu)，可以按模塊進(jìn)行閱讀。

4、隨時(shí)使用查找功能（或超鏈接）閱讀關(guān)聯(lián)類或關(guān)聯(lián)方法。

5、對(duì)于有疑問的地方，不妨寫幾行單元測試。

6、由淺入深，由易到難，多閱讀優(yōu)秀的開源項(xiàng)目，代碼閱讀水平會(huì)突飛猛進(jìn)。

java源代碼分析 實(shí)在是不太會(huì)，求高手教教我。

package?test2;

import?java.io.BufferedReader;

import?java.io.File;

import?java.io.FileInputStream;

import?java.io.FileOutputStream;

import?java.io.IOException;

import?java.io.InputStream;

import?java.io.InputStreamReader;

import?java.util.HashMap;

import?java.util.Map;

import?java.util.Set;

public?class?JavaCodeAnalyzer?{

public?static?void?analyze(File?file)?throws?IOException{

//FileOutputStream?fos?=?new?FileOutputStream("F;"+File.separator+"result.txt");

if(!(file.getName().endsWith(".txt")||file.getName().endsWith(".java"))){

System.out.println("輸入的分析文件格式不對(duì)！");

}

InputStream?is=?new?FileInputStream(file);

BufferedReader?br=?new?BufferedReader(new?InputStreamReader(is));

String?temp;

int?count=0;

int?countSpace=0;

int?countCode=0;

int?countDesc=0;

MapString,?Integer?map?=?getKeyWords();

while((temp=br.readLine())!=null){

countKeys(temp,?map);

count++;

if(temp.trim().equals("")){

countSpace++;

}else?if(temp.trim().startsWith("/*")||temp.trim().startsWith("http://")){

countDesc++;

}else{

countCode++;

}

}

System.out.printf("代碼行數(shù):"+countCode+"占總行數(shù)的%4.2f\n",(double)countCode/count);

System.out.printf("空行數(shù):"+countSpace+"占總行數(shù)的%4.2f\n",(double)countSpace/count);

System.out.printf("注釋行數(shù):"+countDesc+"占總行數(shù)的%4.2f\n",(double)countDesc/count);

System.out.println("總行數(shù)："+count);

System.out.println("出現(xiàn)最多的5個(gè)關(guān)鍵字是：");

System.out.println("");

System.out.println("");

System.out.println("");

System.out.println("");

System.out.println("");

}

public?static?void?main(String[]?args)?{

getKeyWords();

File?file?=?new?File("F://Test.java");

try?{

analyze(file);

}?catch?(IOException?e)?{

//?TODO?自動(dòng)生成?catch?塊

e.printStackTrace();

}

}

public?static?MapString,Integer?getKeyWords(){

MapString,Integer?map?=?new?HashMapString,?Integer();

String[]keywords?=?{"abstract","assert","boolean","break","byte","case","catch","char","class","continue","default","do","double","else","enum","extends","final","finally","float","for","if","implements","import","instanceof","int","interface","long","native","new","package","private","protected","public","return","????strictfp","short","static","super","????switch","synchronized","this","throw","throws","transient","try","void","volatile","while","goto","const"};

for(String?s:keywords){

map.put(s,?0);

}

return?map;

}

public?static?void?countKeys(String?s,MapString,Integer?map){

SetString?keys?=?map.keySet();

for(String?ss:keys){

if(s.indexOf(ss)!=-1){

map.put(ss,?map.get(ss)+1);

}

}

}

}

上班沒啥時(shí)間了，還有點(diǎn)沒寫完，你在想想。

java atm源代碼解析

先不說公司的保密協(xié)議

一個(gè)項(xiàng)目的代碼能在這里全貼出來，還給你講解的清楚？

、不過整個(gè)取款機(jī)流程是很簡單的，就是用戶進(jìn)行不同的操作，

java 調(diào)用 JNI驅(qū)動(dòng)硬件執(zhí)行相應(yīng)的操作，關(guān)鍵就是組織各種類型的報(bào)文，

通過DTU發(fā)送到銀聯(lián)那邊，比如說支付報(bào)文，沖正報(bào)文，日結(jié)報(bào)文……

這些報(bào)文的組織一般java 也只管傳入JNI 中C++組裝好以后再調(diào)用 DTU驅(qū)動(dòng)發(fā)送

java 這一塊就是處理一些邏輯或者頁面流轉(zhuǎn)之類的、

代碼是不可能貼的，保密協(xié)議還是有一定的約束力的

MyView myView = new MyView();

myView.anyView = this;

this.remove(this.xxPanel);

this.add(myView.getPanel());

this.repaint();