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(rèn)證考試介紹03-19
java考試習(xí)題及答案03-26
JAVA認(rèn)證考試細(xì)則03-19
JAVA語言程序設(shè)計(jì)練習(xí)題03-26
2017年java筆試練習(xí)題03-07
sun java認(rèn)證考試介紹03-19
java考試試題及答案10-25