Warning: compile with -Xlint:unchecked pops on this code!

import java.lang.reflect.Method;

public class ClassLoadingTester
{
    public static void main(String a[]){
        try{
            ClassLoader loader=new CustomClassLoader();
            Class c=loader.loadClass("AddClass");
            loader=null;
            Object o=c.newInstance();
            Method m=c.getMethod("getTwoNumbers",new Class[]{String.class,String.class});
            m.invoke(o,new Object[]{"2","3"});

        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

This code snippet generates a warning when i compile in java. I think it pertains to this line,

Method m=c.getMethod("getTwoNumbers",new Class[]{String.class,String.class});

When I attempt to put <String> like this new Clas开发者_JAVA百科s<String>[]{String.class,String.class}

It generates an error saying generic array type I'm doing my code in BlueJ.

But when I leave the code as is it generates that irritating warning ^^.

I just want to get rid of that warning what should I do with that line of code?

---

You can't create arrays of generic types like Class<String>, hence the error. So you don't have much choice other than adding a @SuppressWarnings("unchecked") annotation before the statement to silence the warning.

Note that these warnings almost always have a reason, and silencing them this way regularly may easily result in runtime class cast exceptions! So always think three times before using @SuppressWarnings("unchecked") - use it only when you are absolutely sure the cast is safe and there can be no negative consequences. In this case it looks safe to me to use it.

---

int t=10, a=7, b=52, d=97;

if((t + d) / 2 > b && (d - t) % 2 != 0)
   if(a%2==0 || b%2==0)
      System.out.println(--t + a);
   else
      System.out.println(--t - a);
else
   System.out.println(t + ++a);