Java/Numeric

Check if a string is numeric

To check if a String in Java is numeric, build a simple utility function:

public static boolean isNumeric(String str)  
{  
    try  
    {  
        double d = Double.parseDouble(str);  
    }  
      catch(NumberFormatException nfe)  
    {  
        return false;  
    }  
    return true;  
}

Flags

See also:

• Template:DataStructuresFlag
• Template:AlgorithmsFlag