I want to make a deep copy of an object array using a constructor. public class PositionList { private Position[] data = new Position[0]; public PositionList(PositionList other, boolean deepCopy) { if (deepCopy){ size=other.getSize(); data=new Position[other.data.length]; for (int i...
* object references) from this instance to the new instance. A "deep" copy, * in contrast, would also recursively clone nested objects. A subclass that * needs to implement this kind of cloning should call {@code super.clone()} * to create the new instance and then create deep copies ...
从结果可以看出,我们在修改克隆对象的第一个元素之后,原型对象的第一个元素也跟着被修改了,这说明 Arrays.copyOf() 其实是一个浅克隆。 因为数组比较特殊数组本身就是引用类型,因此在使用 Arrays.copyOf() 其实只是把引用地址复制了一份给克隆对象,如果修改了它的引用对象,那么指向它的(引用地址)所有对象都会发生...
public class CSVTable implements Serializable{ Table<Integer, Integer, String> table; public CSVTable() { this.table = HashBasedTable.create(); } public CSVTable deepClone() { try { ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos)...
setterpublicObjectdeepClone()throwsException{// 序列化ByteArrayOutputStreambos=newByteArray...
public List deepCopy(List src) throws IOException, ClassNotFoundException{ ByteArrayOutputStream byteOut = new ByteArrayOutputStream(); ObjectOutputStream out = new ObjectOutputStream(byteOut); out.writeObject(src); ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray()); Ob...
public Object deepCopy() throws IOException, ClassNotFoundException{ //字节数组输出流,暂存到内存中 ByteArrayOutputStream bos = new ByteArrayOutputStream(); //序列化 ObjectOutputStream oos = new ObjectOutputStream(bos); oos.writeObject(this); ...
First, create input and output streams and then, use them to create object input and object output stream. The object to be cloned is passed to the object output stream. A new object is read by using the object input stream. This will be the deep copy of the original object. ...
data = testData.deepCopy();// copy test data, modify itObjectNode attNode = (ObjectNode) data.path("attributes"); attNode.put("hostName", hostName ); attNode.put("currentTimeMillis", nowMs ); ArrayNode timeStamps = (ArrayNode) data.path("data").path("timeStamp");for(inti =0...
Learn how to make a deep copy of an object in Java.Learn different ways to create a deep copy of an object in Java, and why to prefer a deep copy over a shallow copy.