1 files changed, 25 insertions, 2 deletions
diff --git a/src/org/unitConverter/unit/LinearUnit.java b/src/org/unitConverter/unit/LinearUnit.java
index 7b7338b..1532fc4 100644
--- a/src/org/unitConverter/unit/LinearUnit.java
+++ b/src/org/unitConverter/unit/LinearUnit.java
@@ -128,11 +128,21 @@ public final class LinearUnit extends Unit {
 		this.conversionFactor = conversionFactor;
 	}
 
+	/**
+	 * {@inheritDoc}
+	 * 
+	 * Converts by dividing by {@code conversionFactor}
+	 */
 	@Override
 	protected double convertFromBase(final double value) {
 		return value / this.getConversionFactor();
 	}
 
+	/**
+	 * {@inheritDoc}
+	 * 
+	 * Converts by multiplying by {@code conversionFactor}
+	 */
 	@Override
 	protected double convertToBase(final double value) {
 		return value * this.getConversionFactor();
@@ -170,6 +180,11 @@ public final class LinearUnit extends Unit {
 		return valueOf(base, this.getConversionFactor() / divisor.getConversionFactor());
 	}
 
+	/**
+	 * {@inheritDoc}
+	 * 
+	 * Uses the base and conversion factor of units to test for equality.
+	 */
 	@Override
 	public boolean equals(final Object obj) {
 		if (!(obj instanceof LinearUnit))
@@ -187,6 +202,11 @@ public final class LinearUnit extends Unit {
 		return this.conversionFactor;
 	}
 
+	/**
+	 * {@inheritDoc}
+	 * 
+	 * Uses the base and conversion factor to compute a hash code.
+	 */
 	@Override
 	public int hashCode() {
 		return 31 * this.getBase().hashCode() + DecimalComparison.hash(this.getConversionFactor());
@@ -234,7 +254,7 @@ public final class LinearUnit extends Unit {
 			throw new IllegalArgumentException(
 					String.format("Incompatible units for subtraction \"%s\" and \"%s\".", this, subtrahendend));
 
-		// add the units
+		// subtract the units
 		return valueOf(this.getBase(), this.getConversionFactor() - subtrahendend.getConversionFactor());
 	}
 
@@ -312,7 +332,10 @@ public final class LinearUnit extends Unit {
 		return valueOf(this.getBase().toExponent(exponent), Math.pow(this.conversionFactor, exponent));
 	}
 
-	// returns a definition of the unit
+	/**
+	 * @return a string providing a definition of this unit
+	 * @since 2019-10-21
+	 */
 	@Override
 	public String toString() {
 		return this.getPrimaryName().orElse("Unnamed unit")