写了一段判断奇偶性的Java代码，编译能行就是会出现那种情况(最后)求助🆘🆘
package chapter1;

public class AA {

public static void main(String[] args) {
A T=new A();
if(T.t(4)){
System.out.println("偶数");
}
else System.out.println("奇数");
}

}
class A{
public boolean t (int num1){
if (num1%2==0) return true;
else return false;
}

}
Exception in thread "main" java.lang.NoSuchMethodError: chapter1.test.t(I)Z
at chapter1.AA.main(AA.java:7)