1.5. Code Organization

Files

Java:

• one toplevel class per file
• file name resembles class name

Vala:

• a Vala source file may contain multiple classes
• file name doesn't need to resemble a class name

Hierarchy

Java:

• packages, represented by directory hierarchy
• reverse domain name scheme

import javax.swing.*;

package org.foo.bar;
// ...

Vala:

• namespaces, not related to directory hierarchy
• no reverse domain name scheme

using Gtk;

namespace Foo.Bar {
    // ...
}

Vala namespaces may contain methods without classes. They are implicitly static.

Default Import

Java:

• package java.lang.* imported by default

Vala:

• namespace GLib imported by default