Converting String to int in Java?

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

There is a slight difference between these methods:

  • valueOf returns a new or cached instance of java.lang.Integer
  • parseInt returns primitive int.

To convert a string into an int, use:

String str = "1234";
int num = Integer.parseInt(str);

To convert a number into a string, use:

int num = 1234;   
String str = String.valueOf(num);
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