package com.core;import java.io.IOException;import java.math.BigDecimal;import java.text.DecimalFormat;import java.util.regex.Matcher;import java.util.regex.Pattern;public class Test {    public static void main(String[] args) throws IOException {        //indexof返回在当前字符串里要查询的字符的下标位置，若不存在返回-1        String cname = "尼古拉斯凯奇";        System.out.println(cname.indexOf("斯"));        String ename = "Nicolas Cage";        System.out.println(ename.indexOf(" "));        System.out.println(ename.indexOf("b"));        //BigDecimal一般用在有金钱交易的平台中，float和double不能保证较高的数值精确度        BigDecimal b = new BigDecimal("0.41");        long m = b.multiply(new BigDecimal("300")).longValue(); // 0.41*300        b = new BigDecimal("0.09");        long s = b.movePointRight(2).longValue(); // 0.09小数点右移两位        String result = Long.valueOf(m - s).toString();        System.out.println(result);                //DecimalFormat格式化输出        DecimalFormat df = new DecimalFormat("#0.00");        DecimalFormat df1 = new DecimalFormat("#.00");        Double percent = 0.965;        System.out.println(df.format(percent));        System.out.println(df1.format(percent));                //替换字符串里的字符        String name = "敏感词汇";        Pattern p = Pattern.compile("敏感");        Matcher m1 = p.matcher(name);        if (m1.find()) {            System.out.println(m1.replaceAll("和谐"));        }    }}

37-11140.96.96和谐词汇