Question

如何复制一个java对象

Answer 1

/**
     * 复制对象
     *
     * @param srcObj
     * @return
     */
    public static Object depthClone(Object srcObj) {
        if (srcObj == null) {
            return null;
        }
        Object cloneObj = null;
        ByteArrayOutputStream out = null;
        ObjectOutputStream oo = null;
        ByteArrayInputStream in = null;
        ObjectInputStream oi = null;
        try {
            out = new ByteArrayOutputStream();
            oo = new ObjectOutputStream(out);
            oo.writeObject(srcObj);

            in = new ByteArrayInputStream(out.toByteArray());
            oi = new ObjectInputStream(in);
            cloneObj = oi.readObject();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (out != null) {
                try {
                    out.close();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
            if (oo != null) {
                try {
                    oo.close();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
            if (in != null) {
                try {
                    in.close();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
            if (oi != null) {
                try {
                    oi.close();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
        }
        return cloneObj;
    }