ex17(2).java

JAVA编程思想第四版英文原版习题答案. pdf原版的

// arrays/Ex17.java
// TIJ4 Chapter Arrays, Exercise 17, page 775
// Create and test a Generator for BigDecimal, and ensure 
// that it works with the Generated methods.
import java.math.*;
import net.mindview.util.*;
import java.util.*;

class BigDecimalGenerator implements Generator<BigDecimal> {
	private BigDecimal bd = new BigDecimal(0.0);
	public BigDecimal next() {
		return bd = bd.add(new BigDecimal(1.0));
	}
}

public class Ex17 {
	public static void main(String[] args) {
		BigDecimal[] bda1 = new BigDecimal[4];
		Generated.array(bda1, new BigDecimalGenerator());
		System.out.println(Arrays.toString(bda1));
		BigDecimal[] bda2 = Generated.array(
			BigDecimal.class, new BigDecimalGenerator(), 5);
		System.out.println(Arrays.toString(bda2));
	}
}