Dynamic toString method that excludes null values

toString-8.java

@Override
public String toString(){
    StringBuilder stringBuilder = new StringBuilder(this.getClass().getSimpleName()).append("[ ");
    Arrays.stream(getClass().getDeclaredFields()).filter(field -> {
        field.setAccessible(true);
        try {
            Object value = field.get(this);
            if(value != null)
                return true;
        } catch (IllegalAccessException e) {}
        return false;
    }).forEach(field -> {
        try {
            stringBuilder.append(field.getName()).append("=").append(field.get(this)).append(" ");
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    });
    return stringBuilder.append("]").toString();
}

toString.java

@Override
public String toString(){
    StringBuilder stringBuilder = new StringBuilder(this.getClass().getSimpleName()).append("[ ");
    for(Field field : getClass().getDeclaredFields()){
        try {
            field.setAccessible(true);
            Object value = field.get(this);
            if(value != null)
                stringBuilder.append(field.getName()).append("=").append(field.get(this)).append(" ");
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
    return stringBuilder.append("]").toString();
}