testscale.java

来自「常用的java控件使用实例源代码」· Java 代码 · 共 13 行

import java.math.BigDecimal ;

public class testScale { 
	public static void main(String[] args) {
		Double pDouble;
		BigDecimal bd = new BigDecimal(12.123456);
		BigDecimal bd1 = bd.setScale(2,bd.ROUND_HALF_UP);
		pDouble=bd1.doubleValue();
		long  ll = Double.doubleToLongBits(pDouble);
		System.out.println("pDouble = " + pDouble);

	}
}