Java考試格林練習(xí)題

Java考試格林練習(xí)題

　　question 11)

　　what will be the result of attempting to compile and run the following code?

　　abstract class minebase { abstract void amethod(); static int i;}public class mine extends minebase { public static void main(string argv[]){ int[] ar=new int[5]; for(i=0;i < ar.length;i++) system.out.println(ar[i]); }}

　　1) a sequence of 5 0’s will be printed

　　2) error: ar is used before it is initialized

　　3) error mine must be declared abstract

　　4) indexoutofboundes error

　　question 12)

　　what will be printed out if you attempt to compile and run the following code ?

　　int i=1; switch (i) { case 0: system.out.println("zero"); break; case 1: system.out.println("one"); case 2: system.out.println("two"); default: system.out.println("default"); }

　　1) one

　　2) one, default

　　3) one, two, default

　　4) default

　　question 13)

　　what will be printed out if you attempt to compile and run the following code?

　　int i=9;switch (i) { default: system.out.println("default"); case 0: system.out.println("zero"); break; case 1: system.out.println("one"); case 2: system.out.println("two");}

　　1) default

　　2) default, zero

　　3) error default clause not defined

　　4) no output displayed

【Java考試格林練習(xí)題】相關(guān)文章：

Java考試格林模擬試題03-23

java認證考試介紹03-19

java考試習(xí)題及答案03-26

JAVA認證考試細則03-19

JAVA語言程序設(shè)計練習(xí)題03-26

2017年java筆試練習(xí)題03-07

sun java認證考試介紹03-19

java認證考試細則介紹03-19

java考試試題及答案10-25