2020年JAVA笔试面试题库588题
一、简答题
1.EJB2.0 中定义了几种Enterprise Bean
答案:Session bean, entity bean, message driven bean
2.以下的变量定义中,合法的语句是:A. double a=1+4e2.5; B. short do=15; C. int abc_21;
D. float 1_variable=3.4; 答案:
3.EJB2.0规范中定义了几种Enterprise Bean? A. TimerObject B. Entity Bean
C. MessageDrivenBean D. SessionBean 答案:CD
4.\哪个方法会影响到这段代码的正确性以及效率? Set set = new java.util.HashSet(); set.add( new MyObject( A”));
if ( set.contains( new MyObject( A”))) {……} A. hashCode B. toString C. clone D. equals 答案:
5.\下面哪一项运行结果为true? int i = 9; int j = 9; A. ++j == i; B. j == i ++; C. j == ++ i; D. j == i; E. j++ == i; 答案:BDE
精选最新版JAVA笔试面试完整考试题库588题(含答案)
2020年JAVA笔试面试题库588题一、简答题1.EJB2.0中定义了几种EnterpriseBean答案:Sessionbean,entitybean,messagedrivenbean2.以下的变量定义中,合法的语句是:A.doublea=
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