An object in the java.io package that lets you print output to a destination such as a file.System.out.printPrintStreamOutputStreamSystem.out.stream

The object in the java.io package that lets you print output to a destination such as a file is PrintStream. System.out is an instance of PrintStream.

Here's a step-by-step explanation:

1. java.io package: This is a package provided by Java that contains classes for system input and output through data streams, serialization and the file system.

2. PrintStream: This is a class in the java.io package. It adds functionality to output streams, such as the ability to print various data values conveniently. It's typically used to write to the console or to a file.

3. System.out: This is an instance of PrintStream. It's a standard output stream that is used to display output to the console.

4. print: This is a method of PrintStream. It prints the argument passed to it and is often used with System.out to print to the console.

5. OutputStream: This is a base class in java.io package. It represents an output stream of bytes. PrintStream is actually a subclass of OutputStream.

6. System.out.stream: This is not a valid statement in Java. System.out is an instance of PrintStream and it doesn't have a method or field named 'stream'.