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. 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>

Download this example.

Convert String to Number

Convert String to Number

Convert String to Number

Tutorials