JAVA IO - 临时文件和folder拷贝

//create a temp file
    	   File temp = File.createTempFile("temp-file-name", ".tmp"); 
 
    	   System.out.println("Temp file : " + temp.getAbsolutePath());

Working dir

String workingDir = System.getProperty("user.dir");
	   System.out.println("Current working directory : " + workingDir);

folder copy

public static void copyFolder(File src, File dest)
    	throws IOException{
 
    	if(src.isDirectory()){
 
    		//if directory not exists, create it
    		if(!dest.exists()){
    		   dest.mkdir();
    		   System.out.println("Directory copied from " 
                              + src + "  to " + dest);
    		}
 
    		//list all the directory contents
    		String files[] = src.list();
 
    		for (String file : files) {
    		   //construct the src and dest file structure
    		   File srcFile = new File(src, file);
    		   File destFile = new File(dest, file);
    		   //recursive copy
    		   copyFolder(srcFile,destFile);
    		}
 
    	}else{
    		//if file, then copy it
    		//Use bytes stream to support all file types
    		InputStream in = new FileInputStream(src);
    	        OutputStream out = new FileOutputStream(dest); 
 
    	        byte[] buffer = new byte[1024];
 
    	        int length;
    	        //copy the file content in bytes 
    	        while ((length = in.read(buffer)) > 0){
    	    	   out.write(buffer, 0, length);
    	        }
 
    	        in.close();
    	        out.close();
    	        System.out.println("File copied from " + src + " to " + dest);
    	}
    }