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Converting String to int in Java?

Manoj Bhatt 1887 07-May-2015

How can a String be converted to an int in Java?

My String contains only numbers and I want to return the number it represents.

For example, given the string "1234" the result should be the number 1234.

java string

Updated on 07-May-2015

Can you answer this question?

Answer

07-May-2015

Integer x = Integer.valueOf(str);
// or
int y = Integer.parseInt(str);

There is a slight difference between these methods:

valueOf returns new instance of java.lang.Integer

parseInt returns primitive int.

The same is for all cases: Short.valueOf/parseShort, Long.valueOf/parseLong, etc.