Casting numbers to String

• In this lesson we’ll explore two different approaches of casting numbers into String. (But there are few more in the real world.)

Using .toString

• One approach of casting int to String is by using “<Numeric data type>.toString()”.
• We can cast integers and floating point values using this method.
• In this method, we need to specify the numeric data type as Integer, Double, Float, Byte or Long before .toString().
• The following example explains that.

// Int to String
str1 = Integer.toString(num);

// Double to String
str2 = Double.toString(dbl);

// Float to String
str3 = Float.toString(flt);

// Byte to String
str4 = Byte.toString(byt);

// Long to String
str5 = Long.toString(lng);
    

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Using String.valueOf

• Another approach is by using “String.valueOf()” to cast a number into String.
• Using “String.valueOf()”, we can cast just any numeric data type into a String.
• The following example explains that.
• The ‘num’ variable can be either integer, float, double, byte or long.

str = String.valueOf(num);
    

• Both of these approaches will effectively cast an integer value to String.

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