冷藏解冻深拷贝deepclone

最新推荐文章于 2025-10-08 11:13:36 发布

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#float #bi #object #class #oo

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本文介绍了一个名为Square的Java类，该类实现了Cloneable和Serializable接口，分别用于实现浅拷贝和深拷贝。通过ByteArrayOutputStream和ObjectOutputStream等流操作，详细展示了如何进行深拷贝。

出处：http://blog.youkuaiyun.com/dl88250/archive/2007/08/26/1759978.aspx

public class Square implements Cloneable, Serializable { private Point location = new Point(0, 0); private float sideLength = 1F; @Override public Object clone() { Square tmp = null; try { tmp = (Square) super.clone(); } catch (CloneNotSupportedException cnse) { cnse.printStackTrace(); } finally { return tmp; } } /** * 深克隆方法 * @return */ public Object deepClone() throws IOException, OptionalDataException, ClassNotFoundException { // 首先将对象写到流里 ByteArrayOutputStream bo = new ByteArrayOutputStream(); ObjectOutputStream oo = new ObjectOutputStream(bo); oo.writeObject(this); // 然后将对象从流里读出来 ByteArrayInputStream bi = new ByteArrayInputStream(bo.toByteArray()); ObjectInputStream oi = new ObjectInputStream(bi); return (oi.readObject()); } /** * @return the location */ public Point getLocation() { return location; } /** * @param location the location to set */ public void setLocation(Point location) { this.location = location; } /** * @return the sideLength */ public float getSideLength() { return sideLength; } /** * @param sideLength the sideLength to set */ public void setSideLength(float sideLength) { this.sideLength = sideLength; } }

前拷贝需要实现Cloneable接口，深拷贝需要实现Serializable接口。

    ByteArrayOutputStream bo = new ByteArrayOutputStream();
    ObjectOutputStream oo = new ObjectOutputStream(bo);
    oo.writeObject(this);

    // 然后将对象从流里读出来
    ByteArrayInputStream bi = new ByteArrayInputStream(bo.toByteArray());
    ObjectInputStream oi = new ObjectInputStream(bi);

    return (oi.readObject());