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Program: How to convert String to signed decimal integer value?


Description:

By using Integer.parseInt() method, we can convert String to singned decimal integer value.


Code:
package com.java2novice.wrapper.integer;

public class MySignedParseInt {

	public static void main(String a[]){
		String number = "768";
		Integer i = Integer.parseInt(number);
		System.out.println("converted integer: "+i);
		number = "-786";
		i = Integer.parseInt(number);
		System.out.println("converted integer: "+i);
	}
}

Output:
converted integer: 768
converted integer: -786
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  9. How to convert binary value to integer value?
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Knowledge Centre
String Vs StringBuffer
We know that String is immutable object. We can not change the value of a String object once it is initiated. If we try to change the value of the existing String object then it creates new object rather than changing the value of the existing object. So incase, we are going to do more modificatios on String, then use StringBuffer. StringBuffer updates the existing objects value, rather creating new object.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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