中国大学MOOC: Which can fill in the blank so this code outputs Caught it?public class Tenth { public static void main(String[] args) { Optional opt = Optional.empty(); try { apply(opt); } catch (IllegalArgumentException e) { System.out.println(Caught it); } } private static void apply(Optional opt) { opt._____________(IllegalArgumentException::new); }}
举一反三
- import java.io.IOException； public class ExceptionTest（ public static void main （String[]args） try （ methodA（）； ） catch （IOException e） （ system.out.printIn（“Caught IOException”）； ） catch （Exception e） （ system.out.printIn（“Caught Exception”）； ） ） public void methodA （） { throw new IOException （）； } What is the result？（） A: The code will not compile. B: The output is caught exception. C: The output is caught IOException. D: The program executes normally without printing a message.
- 中国大学MOOC: 下列代码中构造方法的返回类型是（）public class Village { Village () { System .out .println(“hiding in Village”) ; } public static void main( String args [ ]) { Village c =new Village ( ) ;}class Village { public static void main( String args [ ]) { Village c =new Village ( ) ; } Village () { System .out .println(“hiding in Village”) ; } }
- public class Example { public static void main(String[] args) { new Father () { public void show() { System.out.println("helloworld"); } }.show(); } } class Father { public void show() { System.out.println("hellofather"); } }
- public class Test{ public static void main(String[] args){ System.out.println(5/2); } }
- 下面程序运行结果为___________________。public class MyClass{ private static int a = 19; public static void modify(int a){ a = a + 5;} public static void main(String[] args){ modify(a); System.out.println(a); }}