<module name="Checker">
  <module name="TreeWalker">
    <module name="UnusedLocalVariable"/>
  </module>
</module>
        

class Test {

    int a;

    {
        int k = 12; // violation, assigned and updated but never used
        k++;
    }

    Test(int a) {   // ok as 'a' is a constructor parameter not a local variable
        this.a = 12;
    }

    void method(int b) {
        int a = 10;             // violation
        int[] arr = {1, 2, 3};  // violation
        int[] anotherArr = {1}; // ok
        anotherArr[0] = 4;
    }

    String convertValue(String newValue) {
        String s = newValue.toLowerCase(); // violation
        return newValue.toLowerCase();
    }

    void read() throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String s; // violation
        while ((s = reader.readLine()) != null) {
        }
        try (BufferedReader reader1 // ok as 'reader1' is a resource and resources are closed
                                    // at the end of the statement
            = new BufferedReader(new FileReader("abc.txt"))) {
        }
        try {
        } catch (Exception e) {     // ok as e is an exception parameter
        }
    }

    void loops() {
        int j = 12;
        for (int i = 0; j < 11; i++) { // violation, unused local variable 'i'.
        }
        for (int p = 0; j < 11; p++)   // ok
            p /= 2;
    }

    void lambdas() {
        Predicate<String> obj = (String str) -> { // ok as 'str' is a lambda parameter
            return true;
        };
        obj.test("test");
    }
}