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Java Reflection - Attributes

  • Azraf_Sami
     + 2 comments

    I think in this problem, for java8 and java15, there is some bug, If I want to get accepted result, then I need to add the all methods name of Student class manually. But how can I know about the hidden test case?

    This code is working for java7, But not working for java8 or java15

    public class JavaReflectionAttributesTwo{
    public static void main(String args[])
    {
         //!Student std=new Student();
        //! uses class literal, not a function.
        Class std=Student.class;
        //Student std=new Student();  //Class Student=new Student().getClass();
        Method[] mtd=std.getDeclaredMethods();

        ArrayList<String> methodNames = new ArrayList<>();
        for(Method it:mtd)
        {
            methodNames.add(it.getName()); //keep all method name into the string array 
        }

        Collections.sort(methodNames);
        for(String it:methodNames)
        {
            System.out.println(it);
        }
    }
}

    . The same code is working for java8 or java15, If I add all the methods of Student class. .

    import java.lang.reflect.Method;
    import java.util.*;

public class JavaReflectionAttributesTwo{
    public static void main(String args[])
    {
         //!Student std=new Student();
        //! uses class literal, not a function.
        Class std=Student.class;
        //Student std=new Student();  //Class Student=new Student().getClass();
        Method[] mtd=std.getDeclaredMethods();

        ArrayList<String> methodNames = new ArrayList<>();
        for(Method it:mtd)
        {
            methodNames.add(it.getName()); //keep all method name into the string array 
        }

        Collections.sort(methodNames);
        for(String it:methodNames)
        {
            System.out.println(it);
        }
    }
}

/* add manually methods of Student class for java15/ java8, not add automatically Student class, bug in hackerRank? */

class Student{

public void ahqym(){}
public void amftc(){}
public void anotherfunction(){}
public void atcks(){}
public void bwkbd(){}
public void cfwyc(){}
public void cmkxa(){}
public void dnpym(){}
public void dnqvo(){}
public void dvvwq(){}
public void ehjdm(){}
public void elyed(){}
public void fmyce(){}
public void getEmail(){}
public void getId(){}
public void getName(){}
public void ghtlj(){}
public void hluvb(){}
public void isqdf(){}
public void iwhtf(){}
public void jmopy(){}
public void jnskt(){}
public void kbjlt(){}
public void kgwku(){}
public void khuag(){}
public void levtp(){}
public void mcgme(){}
public void migyc(){}
public void moebl(){}
public void nixhb(){}
public void odyqp(){}
public void ogvdl(){}
public void ormim(){}
public void piwro(){}
public void plaob(){}
public void pnruo(){}
public void pqfct(){}
public void ptrup(){}
public void pvgyp(){}
public void qthde(){}
public void rmjig(){}
public void setEmail(){}
public void setId(){}
public void setName(){}
public void sumvl(){}
public void tkbpp(){}
public void tntpj(){}
public void toxdp(){}
public void twyfa(){}
public void uccfq(){}
public void ujxei(){}
public void vhxoi(){}
public void viwuu(){}
public void viyog(){}
public void whjtj(){}
public void ytijy(){}

}

    Is there any other way to solve this isuue? Is my guess correct about bug issue?