Update Relativity.java

Extra white space removed

Author: kvadrik

src/main/java/com/thealgorithms/physics/Relativity.java

@@ -3,75 +3,80 @@
 /**
  * Implements relativity theory formulae.
  * Provides simple static methods to calculate length contraction and time dilation
- * in the laboratory frame with respect to the object's own frame, and velocity 
+ * in the laboratory frame with respect to the object's own frame, and velocity
  * with respect to the moving frame.
  *
- * @see 
+ * @see
  * <a href="https://en.wikipedia.org/wiki/List_of_relativistic_equations">Wikipedia</a>
  */
 public final class Relativity {
 
 	/* Speed of light in m s^-1 */
 	public static final double SPEED_OF_LIGHT = 299792458.0;
-	
+
 	/**
      * Private constructor to prevent instantiation of this utility class.
      */
 	private Relativity() {
 	}
-	
+
 	/**
-	 * Calculates the gamma parameter that is of paramount importance in relativity 
+	 * Calculates the gamma parameter that is of paramount importance in relativity
 	 * theory. It is a dimensionless parameter that is equal to 1 for zero velocity
 	 * but tends to infinity when velocity approaches the speed of light.
 	 *
 	 * @param v The velocity (m/s).
 	 * @return The value of gamma parameter.
 	 */
 	public static double gamma(double v) {
-		if (Math.abs(v) >= SPEED_OF_LIGHT)
+		if (Math.abs(v) >= SPEED_OF_LIGHT) {
 			throw new IllegalArgumentException("Speed must be lower than the speed of light");
-		return 1.0/Math.sqrt(1-v*v/(SPEED_OF_LIGHT*SPEED_OF_LIGHT));
+		}
+		return 1.0 / Math.sqrt(1 - v * v / (SPEED_OF_LIGHT * SPEED_OF_LIGHT));
 	}
 
 	/**
 	 * Calculates the length of an object in the moving frame.
-	 * 
+	 *
 	 * @param length The length of an object in its own frame (m).
 	 * @param v The velocity of the object (m/s).
 	 * @return The length of an object in the laboratory frame (m).
-	 */	
-	public static double lengthContraction (double length, double v) {
-		if (length < 0)
+	 */
+	public static double lengthContraction(double length, double v) {
+		if (length < 0) {
 			throw new IllegalArgumentException("Length must be non-negative");
+		}
 		return length/gamma(v);
 	}
 
 	/**
 	 * Calculates the time that has passed in the moving frame.
-	 * 
+	 *
 	 * @param length The time that has passed in the object's own frame (s).
 	 * @param v The velocity of the object (m/s).
 	 * @return The time that has passed in the laboratory frame (s).
-	 */	
-	public static double timeDilation (double time, double v) {
-		if (time < 0)
+	 */
+	public static double timeDilation(double time, double v) {
+		if (time < 0) {
 			throw new IllegalArgumentException("Time must be non-negative");
+		}
 		return time*gamma(v);
 	}
 
 	/**
 	 * Calculates the velocity with respect to the moving frame.
-	 * 
+	 *
 	 * @param v1 The velocity of the object with respect to laboratory frame (m/s).
 	 * @param v The velocity of the moving frame (m/s).
 	 * @return The velocity with respect to the moving frame (m/s).
-	 */	
-	public static double velocityAddition (double v1, double v) {
-		if (Math.abs(v1) > SPEED_OF_LIGHT)
+	 */
+	public static double velocityAddition(double v1, double v) {
+		if (Math.abs(v1) > SPEED_OF_LIGHT) {
 			throw new IllegalArgumentException("Speed must not exceed the speed of light");
-		if (Math.abs(v) >= SPEED_OF_LIGHT)
+		}
+		if (Math.abs(v) >= SPEED_OF_LIGHT) {
 			throw new IllegalArgumentException("Frame speed must be lower than the speed of light");
+		}
 		return (v1 - v)/(1 - v1*v/(SPEED_OF_LIGHT*SPEED_OF_LIGHT));
 	}
 }