July, 2004: Fixed, Floating, and Exact Computation with Java's BigDecimal

BigDecimal rate=new BigDecimal("1.05");
BigDecimal cost=new BigDecimal("0.70");
System.out.println(rate.multiply(cost).setScale(2, BigDecimal.ROUND_HALF_UP));
// displays 0.74

Example 1: Tax calculation.

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