```
public class TileImprovementStyle
extends java.lang.Object
```
Represents the style of a tile improvement, such as a river or road. Since TileImprovementStyles are immutable and some styles are far more common than others (e.g. rivers with two branches are far more common than rivers with a single branch, or three or four branches), the class caches all styles actually used. As of 0.10.6 we use: - Four character encoded strings for rivers: a "0" for no connection, otherwise the string value of the integer magnitude of the river for each of Direction.longSides. - Eight character binary encoded strings for roads: a "0" or "1" for each of Direction.values() These are distinct so that the overlays can vary.

Fields
Modifier and Type	Field	Description
`private static java.util.Map<java.lang.String,TileImprovementStyle>`	`cache`	Cache all TileImprovementStyles.
`private java.lang.String`	`mask`	A key for the forest overlay, derived from the above.
`private java.lang.String`	`style`	A key for the tile improvement style.

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static TileImprovementStyle`	`getInstance(java.lang.String key)`	Gets the style corresponding to the given string.
`java.lang.String`	`getMask()`	Gets the key suitable for looking up an appropriate overlay (forest) image.
`java.lang.String`	`getString()`	Gets the key suitable for looking up an appropriate tile improvement image.
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Class TileImprovementStyle