Java中浮点数的处理

import java.text.DecimalFormat;

String addGold = String.valueOf(new DecimalFormat("0").format(0.85*100));

System.out.print(addGold);//85

String addGold = String.valueOf(new DecimalFormat("0.00").format(0.84*100));

System.out.print(addGold);//85.00