Angle (Problem Set 1: Around the World)

java.lang.Object
- geo.Angle

```
public class Angle
extends Object
```
Immutable datatype representing an angle in a geographic coordinate system, measured in degrees, minutes (1/60ths of a degree), and seconds (1/60ths of a minute). Angles can be used for many purposes, but for some uses, only certain angles are valid:
- Valid angles for latitude range from 0 to 90 deg N or S, inclusive. Note that 0 deg N & S are different representations of the same latitude (equator).
- Valid angles for longitude range from 0 to 180 deg E or W, inclusive. 0 deg E & W are different representations of the same longitude (prime meridian), and 180 deg E & W are also different representations of the same longitude (antimeridian).
- Valid angles for displacement range from 0 to 180 deg, inclusive.
PS1 instructions: do NOT change this class.

Constructor Summary

Constructors
Constructor	Description
`Angle(int degrees, int minutes, int seconds, CardinalDirection direction)`	Make a new angle of degrees degrees plus minutes arc minutes plus seconds arc seconds.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`degrees()`
`CardinalDirection`	`direction()`
`boolean`	`equals(Object obj)`
`int`	`hashCode()`
`int`	`minutes()`
`int`	`seconds()`
`String`	`toString()`

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Angle
```
public Angle(int degrees,
             int minutes,
             int seconds,
             CardinalDirection direction)
```
    Make a new angle of degrees degrees plus minutes arc minutes plus seconds arc seconds. Must be at most Integer.MAX_VALUE degrees total.
    
    Parameters:
    
    degrees - degrees of arc, must be nonnegative
    
    minutes - minutes of arc, must be nonnegative
    
    seconds - seconds of arc, must be nonnegative
    
    direction - cardinal direction of the angle
- Method Detail
  - degrees
```
public int degrees()
```
    Returns:
    
    degrees of arc in this angle, must be nonnegative
  - minutes
```
public int minutes()
```
    Returns:
    
    arc minutes in this angle after accounting for whole degrees, must be in [0,60)
  - seconds
```
public int seconds()
```
    Returns:
    
    arc seconds in this angle after accounting for whole degrees and minutes, must be in [0, 60)
  - direction
```
public CardinalDirection direction()
```
    Returns:
    
    cardinal direction of this angle
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object