How to use NumberFormat Class in Android? – Rounding a number in android, formatting, getting decimal values etc in android.
package com.coderzheaven.numberformattest;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;
import android.app.Activity;
import android.os.Bundle;
import android. widget. TextView;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv = new TextView(this);
tv.setPadding(10, 10, 10, 10);
NumberFormat numberFormat = new DecimalFormat("##");
String str = numberFormat.format(-01234.567); // -1235
tv.setText(str + "\n\n");
str = numberFormat.format(00); // 0
tv.append(str + "\n\n");
numberFormat = new DecimalFormat("##00");
str = numberFormat.format(0); // 00
tv.append(str + "\n\n");
numberFormat = new DecimalFormat(".00");
str = numberFormat.format(-.4567); // -.46
tv.append(str + "\n\n");
numberFormat = new DecimalFormat("0.000");
str = numberFormat.format(-.34567); // -0.346
tv.append(str + "\n\n");
numberFormat = new DecimalFormat("#.######");
str = numberFormat.format(-012.34567); // -12.34567
tv.append(str + "\n\n");
numberFormat = new DecimalFormat("#.000000");
str = numberFormat.format(-1234.567); // -1234.567000
tv.append(str + "\n\n");
numberFormat = new DecimalFormat("#,###,###");
str = numberFormat.format(-01234567.890); // -1 234 568
tv.append(str + "\n\n");
numberFormat = new DecimalFormat("'text'#");
str = numberFormat.format(+1234.567); // text1235
tv.append(str + "\n\n");
// Exponential notation
numberFormat = new DecimalFormat("00.00E0");
str = numberFormat.format(-012345.67); // -12.35E2
tv.append(str + "\n\n");
// set locale format
// FRANCE locale
Locale locale = Locale.FRANCE;
str = NumberFormat.getNumberInstance(locale).format(-123456.789); // -123 456,789
tv.append(str + "\n\n");
setContentView(tv);
}
}

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