expected ; error when initializing an int variable with binary value in java

Question

Below is the code:

class PlayWithBinary {
    static int age;

    public static void main (String args[]){
        int i = 0b10101010;
        System.out.println("my age is: " + age + " my salary is: "+ i);
    }
}

In terminal I executed : javac PlayWithBinary.java

For some reasons it is showing this error message:

PlayWithBinary.java:5: ';' expected
        int i = 0b10101010;
                 ^
1 error

Any ideas?

Update: for those who are getting similar errors, here is the link to download JDK 8 - Java SE Development Kit 8 Downloads

Which version of Java are you using? Binary literals were introduced with Java 7. — Alexis C., Jan 04 '15 at 08:20

score 3 · Accepted Answer · answered Jan 04 '15 at 08:23

3

Make sure your project is configured with a Java compliance level of Java 7 or above, or you could modify your code to use Integer.parseInt(String, int) like

int i = Integer.parseInt("10101010", 2);

answered Jan 04 '15 at 08:23

Elliott Frisch

198,278
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score 1 · Answer 2 · edited May 23 '17 at 10:33

1

It sounds like you're using an older version of Java that doesn't support this. This feature was added in Java 7 - see the documentation and this related question. You should upgrade your Java version to fix this.

Alternatively, you can use Integer.parseInt(String, int) on your code: int i = Integer.parseInt("10101010", 2);

edited May 23 '17 at 10:33

Community

1
1

answered Jan 04 '15 at 08:22

Krease

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expected ; error when initializing an int variable with binary value in java

2 Answers2