variable might already have been assigned when it cannot be assigned

Question

research this code:

public class TestFinalAndCatch {
    private final int i;

    TestFinalAndCatch(String[] args) {
        try {
            i = method1()         


        

Answer 1

To overcome this problem, use a local variable in the try catch block and then assign that result to the instance variable.

public class TestFinalAndCatch {
    private final int i;

    TestFinalAndCatch(String[] args) {
        int tmp;
        try {
            tmp = method1();
        } catch (IOException ex) {
            tmp = 0;
        }
        i = tmp;
    }

    static int method1() throws IOException {
        return 1;
    }
}