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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" "\t\t" (byte)"\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>

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