J2SE编译.java文件并获取编译进度

J2SE编译.java文件并获取编译进度

一直在想一个和eclipse相仿的编译.java文件相似的方法，查看了api后，写出了以下代码。

源文件放在D://Test//cmdJavaTest//src下，所要编译的类为j2me.shell.*，编译后存放在tempclass文件夹下。

由于Runtime.exec(String cmdStr,String[]envp,File file)中envp并不支持迭代收，所以EXTRAAPI也只好使用全称将所以包的完整路径都表示出来了。

 

编译进度记录在了log.txt中。

 

代码如下：

 

public static void exec_javac() {// String str = "cmd /c dir";String str = "cmd /c %JAVAC% -verbose -g:none -source 1.3 -target 1.3 -bootclasspath %CLDCAPI%;%MIDPAPI%;%EXTRAAPI%;. -classpath %CLDCAPI%;%MIDPAPI%;%EXTRAAPI%;%DESTINATION% -d .//%DESTINATION% %JAVA_FILES%";String[] envp = {"JAVAC=E://Java//jdk1.6.0_14//bin//javac.exe","J2MEBOOT=D://MissionSetup//SunWTK2_5_2","CLDCAPI=D://MissionSetup//SunWTK2_5_2//lib//cldcapi11.jar","MIDPAPI=D://MissionSetup//SunWTK2_5_2//lib//midpapi20.jar","EXTRAAPI=D://MissionSetup//SunWTK2_5_2//lib//jsr75.jar;"+ "D://MissionSetup//SunWTK2_5_2//lib//jsr082.jar;"+ "D://MissionSetup//SunWTK2_5_2//lib//mmapi.jar;"+ "D://MissionSetup//SunWTK2_5_2//lib//wma20.jar;","DESTINATION=tempclass", "JAVA_FILES=src//j2me//shell//*.java" };try {File file = new File("D://Test//cmdJavaTest");File logFile = new File("res//log.txt");if (logFile.exists()) {logFile.delete();}logFile.createNewFile();OutputStream os = new FileOutputStream(logFile);Process process = Runtime.getRuntime().exec(str, envp, file);InputStream is = process.getInputStream();int read = -1;byte[] data = new byte[128];InputStream errorIs = process.getErrorStream();System.out.println("open errorStream");while ((read = errorIs.read(data)) != -1) {os.write(data, 0, read);System.out.println("read = " + read);}System.out.println("ErrorStream Done!!!");System.out.println("open inputStream");while ((read = is.read(data)) != -1) {System.out.println("read = " + read);os.write(data, 0, read);}System.out.println("InputStream Done!!!");os.close();is.close();process.destroy();} catch (IOException e) {e.printStackTrace();}}