round double value by scale - Android java.lang

Android examples for java.lang:Double

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Description

round double value by scale

Demo Code

import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.provider.Settings;
import android.util.Base64;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Method;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main{

    public static double round(double v, int scale) {
        String temp = "####.";
        for (int i = 0; i < scale; i++) {
            temp += "0";
        }/* w  w w  .j a  v a2s . co  m*/
        return Double.valueOf(new java.text.DecimalFormat(temp).format(v));
    }

}

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