public class ClassA {

private int a;
private char x;


public ClassA () {
a=5;
x='c';
int local;
}


}


Solution
In the exaple a local variable 'local' has been delcared. This should be avoided. Constructor should only be used to assign value to the fields

public class ClassA {

private int a;
private char x;


public ClassA () {
a=5;
x='c';

}


}