java设置输出小数点位数

public class FormatOutput {
public static void main(String args[]) {
System.out.printf("%.2f/n", 2.3333);
System.out.printf("%-10s%-10s%-10s/n", "ab", "f1", "200");
System.out.printf("%-10s%-10s%-10s/n", "abc", "factory", "200");
}
}