What's the error?

Exception in thread "main" java.lang.NumberFormatException: For input string: "" at java.base/java.lang.NumberFormatException.forInputString(Unknown Source) at java.base/java.lang.Integer.parseInt(Unknown Source) at java.base/java.lang.Integer.parseInt(Unknown Source) at rew.Project7's 1.main (Project7's 1.java:29)

if(n==1) { System.out.println ("Enter Account Number: "); String x = sc.nextLine(); x = x.replaceAll("-",""); accountNumber = Integer.parseInt(x); //Convert String to Numeric

It's the 29th line. The one on the top. It's about the error on the top. What's wrong with that? The accountNumber is declared int above.

java

2022-09-22 19:12

2 Answers


public class Test {

    public static void main(String[] args) {
        String str = "";

        int i = Integer.parseInt(str);
        System.out.println(i);
    }
}

Exception in thread "main" java.lang.NumberFormatException: For input string: "" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:592) at java.lang.Integer.parseInt(Integer.java:615) at Test.main(Test.java:7)

Since you designed it yourself, wouldn't it be blank? Please print out the value of x.

2022-09-22 19:12

It looks like x is blank. Check the space

2022-09-22 19:12

If you have any answers or tips

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