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Let’s take an example that crosses the minimum and maximum value that we could parse using the Integer.parseInt java method: System.out.println(Integer.parseInt("-2147483649")); Running the above code would result to the following:
6 sty 2022 · public static int parseInteger(String stringNumber) { int sum=0; int position=1; for (int i = stringNumber.length()-1; i >= 0 ; i--) { int number=stringNumber.charAt(i) - '0'; sum+=number*position; position=position*10; } return sum; }
The parseInt () method will parse the string passed in the arguments as a signed decimal integer. Here the string passed should only have the decimal characters, except that the first character of the string can be a minus sign (-) to represent a negative value or a positive sign (+) to indicate a positive value.
The following example shows the usage of Integer parseInt () method to parse a Integer object from a string containing decimal number. We've created a String variable and assign it a string containing decimal number. Then using parseInt method, we're obtaining the Integer object and printing it.
parseInt(int i) − This returns an integer, given a string representation of decimal, binary, octal, or hexadecimal (radix equals 10, 2, 8, or 16 respectively) numbers as input. Example Live Demo
27 paź 2022 · Java Integer parseInt () method returns int value after parsing the given string using the specified radix. If radix is not provided, then it uses 10 as radix.
