Parse number with NumberFormat and Locale

    
   
import java.text.NumberFormat;
import java.util.Locale;

public class Main {
  public static void main(String[] argv) throws Exception {

    Number number = NumberFormat.getCurrencyInstance(Locale.GERMANY).parse("$123.45");
    if (number instanceof Long) {
      System.out.println("Long value");
    } else {
      System.out.println("Double value");
    }
  }
}

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Parse number with NumberFormat and Locale : Number Format « Data Type « Java

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