The JavaTM Tutorial

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Trail: Learning the Java Language

## Lesson: Object and Data Basics

> > Under Construction: We are in the process of creating this lesson. In addition to the sections listed below that have been moved here from other lessons, we plan to include information in this lesson about collections and data formatting. Incomplete sections are marked with [PENDING]. Continue to use our feedback form to tell us what you like and don't like about this lesson and the tutorial.

> [PENDING: needs an intro]

### Objects

> Here, you will learn how to create and use objects of any type. This section also discusses how the system cleans up the object when it's no longer needed.

### Arrays

> An array is an important data structure in any programming language. An array is a fixed-length structure that stores multiple values of the same type.

### Strings

> This section illustrates how to manipulate character data using the `String` and `StringBuffer` classes. It also teaches you about accessor methods and how the compiler uses `String`s and `StringBuffer`s behind the scenes.

### Number Objects

> [PENDING]

### Formatting Numbers

> [PENDING]

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