String to Integer in Java

Recently got interest in Java and started learning it. I started using NetBeans to learn Java with the GUI design. But I suddenly struck with the conversion of Text box values to integer for calculation purposes.

Finally found these two simple codes to convert a string value to an integer value.

Integer.parseInt("String");

Integer.valueOf("String");
 

Initialize an integer :

int x;

Assign the string to the integer:

Lets say string value will be textFeildj1.text() (Text box value)

x = Integer.parseInt(jTextField1.getText());
or 

x = Integer.valueOf(jTextField1.getText());