动态编译~

[youngmean]

import java.io.*;
import java.util.*;
import java.lang.reflect.*;
import java.io.File;

public class CompileTest{
static com.sun.tools.javac.Main javac = new com.sun.tools.javac.Main();
public static void main(String[] args){
try{
File file = File.createTempFile("RunTime",".java",new File(System.getProperty("user.dir")));
file.deleteOnExit();
String filename = file.getName();
String classname = filename.substring(0,filename.indexOf('.'));
PrintWriter out = new PrintWriter(new FileOutputStream(file));
out.println("public class "+classname+"{");
out.println("public static void main(String[] args){");
out.println("System.out.println(\"Yes!\");");
out.println("}}");
String[] arg = new String[]{"-d",System.getProperty("user.dir"),filename};
int status = javac.compile(arg); //为什么没有产生class文件，但是返回值是0
System.out.println("status is "+ status);


out.flush();
out.close();

}catch(Exception e){e.printStackTrace();}

}
}

[redlaputa]

厉害

[guestman]

佩服！
我这运行正常！