How to Convert an String to Integer in Java?

Step 1

Use `Integer.parseInt("123")`

Step 2

Use `Integer.valueOf("123")`

Step 3

Use `new Integer("123")`

Step 4

Use `Integer.parseInt(str.trim())` for strings with surrounding spaces

Step 5

Use `Integer.parseInt(str, 10)` for base-10 conversion

Step 6

Use `Integer.parseInt(str, radix)` for other number bases

Step 7

Use `try-catch` to handle `NumberFormatException`

Step 8

Use `Integer.valueOf(str).intValue()` if you need a primitive `int` from `Integer`

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