ZpCikTi ZpCikTi - 1 year ago 57
Java Question

I've got trouble with inner and static inner class at java

Firstly, Thanks everybody that read that topic.

How can if statement become true in test class? I couldnt find any solution.I couldnt write any code in these method.I tried to send from Room class numberOfTiger to class Question's method but I didnt achieve that.

That's question about ,How can I change int variable(numberofTiger) to Cat.Tiger variable.After that if statement become true to invoke (getNumberOfTiger) method.

public class Test {

public static void main(String[] args) {

Animal an = new Animal();
Animal.Cat an1 = an.new Cat();
Animal.Cat.Tiger an2 = an1.new Tiger(3, 900, 2);

if (Animal.Question.getnumberOfTiger(an2) == 3) {

public class Animal {

Cat[] c;

// inner class
class Cat {

Tiger[] t;

// inner class
class Tiger {
private int numberOfTiger;
private int averageOfTigerWeigth;
private int youngTiger;

public Tiger(int numberOfTiger, int averageOfTigerWeigth, int youngTiger) {
this.numberOfTiger = numberOfTiger;
this.averageOfTigerWeigth = averageOfTigerWeigth;
this.youngTiger = youngTiger;

static class Question {

static int getnumberOfTiger(Cat.Tiger a) {
return 0;

Answer Source

In addition to either making Cat a static class, or using its instance,

you also need a getter for a.numberOfTiger since it is private, in Tiger class:

public getNumberOfTiger() {
return numberOfTiger;


return a.getNumberOfTiger();
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