示例

public class ClassA {{
private int i = 1;
private int i2 = 0;

public void method(){
i2 ++;
}
}

解决方案
如果在声明之后未指定私有字段,那么应该将私有字段声明为 final
public class ClassA {
private final int i = 1;
private int i2 = 0;

public void method(){
i2 ++;
}
}