Example

public class ClassA {

private int a;
private char x;
private stactic final int VALUE =6;

public ClassA () {
x='c';
}
public ClassA (int in) {
x='c';
}


}


Solution
All the non-static fields should be initialized in atleast one constructor

public class ClassA {

private int a;
private char x;
private stactic final int VALUE =6;

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


}