Convert a String into an Integer
Data
In this
section, you will learn to convert a string type data into an integer type. The java.lang package provides the functionality to convert the string
type data into an integer type data.
Code Description:
This program takes a string type data on the console
and converts it into an integer. Data at the console is
as a string type so, it must be converted into an integer type using the parseInt()
method. This method converts the string type number into an integer format.
Whenever you give the string type data as 's' then the exception must be
thrown.
parseInt():
The parseInt() method parses the string parameter as a signed decimal integer. This
method is used to convert an integer type data into a string type data.
Here
is the code of this code:
import java.io.*;
import java.lang.*;
public class StringToInt{
public static void main(String[] args)throws IOException {
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter an integer number: ");
String str = bf.readLine();
int i = Integer.parseInt(str);
System.out.println("String: " + str);
System.out.println("Integer: " + i);
}
}
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Download this program:
Output this program.
C:\vinod\convert>javac StringToInt.java
C:\vinod\convert>java StringToInt
Enter an integer number:
10
String: 10
Integer: 10 |
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