试题2

package FileDemo;

import java.time.Month;
import java.util.Iterator;
import java.util.LinkedList;

/**
 * Created by ZL on 2016/8/14.
 */
public class Test03 extends Base{
    public Test03() {
        System.out.println("Checket");
        super();
    }
    public static void main(String [] args){
        Test03 c = new Test03();
    }
}
class Base{
    Base() {
        System.out.println("Base");
    }
}

结果：编译会出错，super()必须放在构造方法第一行