Code block a.
Code block B.
Code block c.
Code block d.
Code block e.
第1题:
下面程序的输出结果是什么? class C1{ static int j=0; public void method(int a){ j++; } } class Test extends C1{ public int method(){ return j++; } public void result(){ method(j); System.out.println(j+method()); } public static void main(String args[]){ new Te
A.0
B.1
C.2
D.3
第2题:
A.Line 33 must be called within a try block.
B.The exception thrown by method1 in class A is not required to be caught.
C.The method declared on line 31 must be declared to throw a RuntimeException.
D.On line 5 of class A, the call to method2 of class B does not need to be placed in a try/catch block.
第3题:
阅读下列代码段,选出该代码段的正确文件名( )。 class A { void methodl() { System.out.println("methodl in class A"); } } public class B { void method2() { System.out.println("method2 in class B"); } public static void main(String args[]) { System.out.println("main in class B"); } }
A.A.java
B.A.class
C.B.class
D.B.java
第4题:
Which two statements are true about the hashCode method?()
第5题:
分析下列代码: Class A{ Public static void main(String[] args){ method(); } static void method(){ try{ System.out.println("Hello"); }finally{ System.out.println("good-bye"); } } } 编译运行后,输出结果是()。
第6题:
GiventhatastaticmethoddoIt()inaclassWorkrepresentsworktobedone,whatblockofcodewillsucceedinstartinganewthreadthatwilldothework?
CODEBLOCKa:
Runnabler=newRunnable(){
publicvoidrun(){
Work.doIt();
}
};
Threadt=newThread(r);
t.start();
CODEBLOCKb:
Threadt=newThread(){
publicvoidstart(){
Work.doIt();}};
t.start();
CODEBLOCKc:
Runnabler=newRunnable(){
publicvoidrun(){
Work.doIt();
}
};
r.start();
CODEBLOCKd:
Threadt=newThread(newWork());
t.start();
CODEBLOCKe:
Runnablet=newRunnable(){
publicvoidrun(){
Work.doIt();
}
};
t.run();
第7题:
阅读下列代码段,选出该代码段的正确的文件名( )。 class A { void method () { System.out.println ("methodl in class A"); } } public class B { void method2 () { System.out.println("method2 in class B"); } public static void main (String args[]) { System.out.println ("main () in class B"); } }
A.A.java
B.A.class
C.B.class
D.B.java
第8题:
阅读下列代码段,选出该代码段的正确文件名( )。 class A { void method1() { System.out.println("method1 in class A"); } } public class B { void method2() { System.out.println("method2 in class B"); } public static void main(String args[]) { System.out.println("main in class B"); } }
A.A.java
B.A.class
C.B.class
D.B.java
第9题:
class A { protected int method1(int a, int b) { return 0; } } Which two are valid in a class that extends class A?()
第10题:
Given a class Repetition: 1.package utils; 2. 3.public class Repetition{ 4.public static String twice(Strings){returns+s;} 5.} and given another class Demo: 1.//insert code here2. 3.public class Demo{ 4.public static void main(String[]args){ 5.System.out.println(twice("pizza")); 6.} 7.} Which code should be inserted at line 1 of Demo.java to compile and run Demo to print“pizzapizza”?()