Tutorials

# Convert String to Number

In this section, we will learn how to convert String to Number.

In this section, we will learn how to convert String to Number.

# Convert String to Number

In this section, we will learn how to convert String to Number. The following program provides you the functionality to convert String to Number.

Code Description:

In this program we have taken a String of int, byte, boolean, double as shown below and also we have used the method MIN
_VALUE and MAX_VALUE of different wrapper classes to print all the values on int, short, double etc.

Here is the code of the program:

 public class StrToNum{   public static void main (String args[]){   String table = "Table of the Java Numbers\n" +  "Primitive Type\tSize in Bits\tTypical Value\tMinimum Value \tMaximum Value\n" +  "**************\t**************\t**************\t********** ****\t**************\n";      // int   table += "int\t\t" + 32 + "\t\t" + 65536 + "\t\t" + Integer.MIN_VALUE  + "\t" + Integer.MAX_VALUE + "\n";   // byte   table += "byte\t\t" + 8 + "\t\t" + (byte)5 + "\t\t" + Byte.MIN_VALUE  + "\t\t" + Byte.MAX_VALUE + "\n";   // short   table += "short\t\t" + 16 + "\t\t" + (short)1024 + "\t\t" + Short.MIN_VALUE  + "\t\t" + Short.MAX_VALUE + "\n";   //boolean   table += "boolean\t\t" + "\t\t" + true + ',' + false + "\t\t" + "\n";   // double   table += "double\t\t" + 64 + "\t\t" + 100e100 + "\t\t" + Double.MIN_VALUE +  "\t" + Double.MAX_VALUE + "\n";   table +=  "**************\t**************\t**************\t***************\t************\n";   System.out.println(table); } }

Output of the program:

 C:\unique>javac StrToNum.java C:\unique>java StrToNum Formatable of the Java Numbers Primitive Type   Size in Bits  Typical Value  Minimum Value   Maximum Value ************** ************** ************** ************** ************** int   32  65536   -2147483648  2147483647 byte  8  5   -128  127 short  16  1024  -32768  32767 boolean   true,false double   64  1.0E102   4.9E-324   1.79769313486231 57E308 ************** ************** ************** *************** ************ C:\unique>