copyfile.java

Java开发的通用条码打印程序

package barprint.print;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;


/**
 * 实现文件拷贝，--字体安装功能
 * @param from String
 * @param to String
 * @throws IOException
 */


public class CopyFile {
    private String str_from;
    private String str_to;

    CopyFile(String from, String to){
        str_from = from;
        str_to = to;
        try {
            copy(str_from, str_to);
        } catch (IOException ex) {
        }
    }

    public void copy(String from, String to) throws IOException {
        int BUFF_SIZE = 100000;
        byte[] buffer = new byte[BUFF_SIZE];
        InputStream in = null;
        OutputStream out = null;

        try {
            in = new FileInputStream(from);
            out = new FileOutputStream(to);
            while (true) {
                synchronized (buffer) {
                    int amountRead = in.read(buffer);

                    if (amountRead == -1) {
                        break;
                    }

                    out.write(buffer, 0, amountRead);

                }
            }
        } finally {
            if (in != null) {
                in.close();
            }

            if (out != null) {
                out.close();

            }
        }
    }
}