Learn Java – How to Convert String to Int?

It is often necessary to handle data in our programs, and it is not in the format that we want. With Java, you can do conversions of objects, such as a string to int, and vice-versa. In this article, we will show you several conversions methods in Java.

Converting String to integer

Make the conversion of a String to an integer using the parseInt() method of Integer class, or by using the methods valueOf() and intValue() of the Integer class combined, as shown in the following code.


Converting a String to a float

Convert a String to float through the combination of the methods valueOf () and floatValue () of Float class.


Converting a String to a long

You can make the conversion of a String to long using the parseLong() method of Long class, or using the combination of the methods valueOf() and longValue(), also from Long class.

Similarly, going in the other direction, we can:

Converting an integer to a String

See in the code below two ways to do the conversion of an integer to a string:


Converting a long to a String

You can do the conversion from long to String using the toString method of the class.

If you want to explore more about Java, visit our videos section! Below are some examples:

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How to convert String to int in Java java string int programming tipsAikar

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About author

About Author Dr. Michael Jurgen Garbade is the founder of LiveEdu.TV, Kyuda, Education Ecosystem. He is future Venture Capitalist, Future Politician and always on the lookout for the Next Big Challenge. Obtained Masters in business administration and physics, and a Ph.D. in finance with professional work experience in high-paced environments at Fortune 500 companies like Amazon and General Electric. Expertize: Python, PHP, Sencha Touch & C++, SEO, Finance, Strategy & E-commerce. He speaks English and German and has worked in the US, Europe, and Asia. At Education Ecosystem he is the CEO and runs business operations.