java - 将我的树对象写入java中的文件中？

Question

我想将我的类的对象写入文件并稍后使用它我应该怎么做？例如我想将 t4 写入文件:

   BinaryTree t1 = new BinaryTree( 1 );
        BinaryTree t3 = new BinaryTree( 3 );
        BinaryTree t5 = new BinaryTree( 5 );
        BinaryTree t7 = new BinaryTree( 7 );
        BinaryTree t2 = new BinaryTree( );
        BinaryTree t4 = new BinaryTree( );
        BinaryTree t6 = new BinaryTree( );
        BinaryTree t8 = new BinaryTree( );
        BinaryTree t9 = new BinaryTree( );

        t2.merge( 2, t1, t3 );
        t6.merge( 6, t5, t7 );
        t4.merge(4, t2, t6);

请说明如何写入和读取该文件(使用java cleanbeans)谢谢

Answer 1

使您的实现具有可序列化接口(interface)。然后您可以使用以下命令保存对象:

OutputStream file = new FileOutputStream( "tree.bin" );
OutputStream buffer = new BufferedOutputStream( file );
ObjectOutput output = new ObjectOutputStream( buffer );

output.writeObject(tree);

要从文件加载，您可以使用以下命令:

InputStream file = new FileInputStream( "quarks.ser" );
InputStream buffer = new BufferedInputStream( file );
ObjectInput input = new ObjectInputStream ( buffer );

BinaryTree tree = (BinaryTree)input.readObject();

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