diff -r 251d0ed461fb -r 58ec6da75f6f task4/solution06/src/org/apidesign/apifest08/currency/Amount.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/task4/solution06/src/org/apidesign/apifest08/currency/Amount.java	Sat Oct 11 23:38:46 2008 +0200
@@ -0,0 +1,81 @@
+package org.apidesign.apifest08.currency;
+
+import static org.apidesign.apifest08.currency.Assert.notNull;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.Currency;
+
+/**
+ * An amount representation. Amount is represented as composition of a value and 
+ * a currency.
+ */
+public final class Amount {
+	
+	private final BigDecimal value;
+	private final Currency currency;
+	private final int scale;
+	private final RoundingMode roundingMode;
+	
+	public static final RoundingMode DEFAULT_ROUNDING = RoundingMode.HALF_EVEN; 
+	
+	public Amount(final BigDecimal value, final Currency currency) {
+		notNull(value, "value");
+		notNull(currency, "currency");
+		this.value = value;
+		this.currency = currency;
+		this.scale = currency.getDefaultFractionDigits();
+		this.roundingMode = DEFAULT_ROUNDING;
+	}
+	
+	public Amount(final BigDecimal value, final Currency currency, final RoundingMode roundingMode) {
+		notNull(value, "value");
+		notNull(currency, "currency");
+		notNull(roundingMode, "roundingMode");
+		
+		this.value = value;
+		this.currency = currency;
+		this.scale = currency.getDefaultFractionDigits();
+		this.roundingMode = roundingMode;
+	}
+	
+	public Amount(final long value, final Currency currency) {
+		this(BigDecimal.valueOf(value), currency);
+	}
+	
+	public Amount(final String value, final Currency currency) {
+		this(new BigDecimal(value), currency);
+	}
+	
+	/**
+	 * @return the value with scale of the associated currency and rounded by 
+	 * the rounding mode. 
+	 */
+	public BigDecimal getValue() {
+		return value.setScale(scale, roundingMode);
+	}
+	
+	/**
+	 * @return the raw (no explicit scale, no explicit rounding) value 
+	 */
+	public BigDecimal getRawValue() {
+		return value;
+	}
+	
+	public Currency getCurrency() {
+		return currency;
+	}
+
+	public int getScale() {
+		return scale;
+	}
+
+	public RoundingMode getRoundingMode() {
+		return roundingMode;
+	}
+
+	@Override
+	public String toString() {
+		return value + ",- " + currency.toString();
+	}	
+}