NO.1 Given the content of /resourses/Message.properties:
welcome1="Good day!"
and given the code fragment:
Properties prop = new Properties ();
FileInputStream fis = new FileInputStream ("/resources/Message.properties");
System.out.println(prop.getProperty("welcome2", "Test"));//line n1
What is the result?
A. Good day!
followed by an Exception stack trace
B. Good day!
followed by an Exception stack trace
C. Good day!
D. A compilation error occurs at line n1.
Answer: D

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NO.2 Given the code fragment:
Path path1 = Paths.get("/app/./sys/");
Path res1 = path1.resolve("log");
Path path2 = Paths.get("/server/exe/");
Path res1 = path1.resolve("/readme/");
What is the result?
A. /app/sys/log /readme/server/exe
B. /app/log/sys /server/exe/readme
C. /app/./sys/log /readme
D. /app/./sys/log /server/exe/readme
Answer: D

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NO.3 Which two statements are true about localizing an application?
A. Support for new regional languages does not require recompilation of the code.
B. Textual elements (messages and GUI labels) are hard-coded in the code.
C. Language and region-specific programs are created using localized data.
D. Resource bundle files include data and currency information.
E. Language codes use lowercase letters and region codes use uppercase letters.
Answer: A,E

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Reference: http://docs.oracle.com/javase/7/docs/technotes/guides/intl/

NO.4 Given the code fragments:
class Caller implements Callable<String> {
String str;
public Caller (String s) {this.str=s;}
public String call()throws Exception { return str.concat ("Caller");}
class Runner implements Runnable {
String str;
public Runner (String s) {this.str=s;}
public void run () { System.out.println (str.concat ("Runner"));}
public static void main (String[] args) InterruptedException, ExecutionException {
ExecutorService es = Executors.newFixedThreadPool(2);
Future f1 = es.submit (new Caller ("Call"));
Future f2 = es.submit (new Runner ("Run"));
String str1 = (String) f1.get();
String str2 = (String) f2.get();//line n1
System.out.println(str1+ ":" + str2);
What is the result?
A. The program prints:
Run Runner
Call Caller : null
And the program does not terminate.
B. The program terminates after printing:
Run Runner
Call Caller : Run
C. A compilation error occurs at line n1.
D. An Execution is thrown at run time.
Answer: A

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NO.5 Given:
Class A { }
Class B { }
Interface X { }
Interface Y { }
Which two definitions of class C are valid?
A. Class C extends A implements X { }
B. Class C implements Y extends B { }
C. Class C extends A, B { }
D. Class C implements X, Y extends B { }
E. Class C extends B implements X, Y { }
Answer: A,E

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extends is for extending a class.
implements is for implementing an interface. Java allows for a class to implement many interfaces.

NO.6 Given:
class UserException extends Exception { }
class AgeOutOfLimitException extends UserException { }
and the code fragment:
class App {
public void doRegister(String name, int age)
throws UserException, AgeOutOfLimitException {
if (name.length () < 6) {
throw new UserException ();
} else if (age >= 60) {
throw new AgeOutOfLimitException ();
} else {
System.out.println("User is registered.");
public static void main(String[ ] args) throws UserException {
App t = new App ();
t.doRegister("Mathew", 60);
What is the result?
A. User is registered.
B. An AgeOutOfLimitException is thrown.
C. A UserException is thrown.
D. A compilation error occurs in the main method.
Answer: A

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NO.7 Given the code fragment:
class CallerThread implements Callable<String> {
String str;
public CallerThread(String s) {this.str=s;}
public String call() throws Exception {
return str.concat("Call");
public static void main (String[] args) throws InterruptedException, ExecutionException
ExecutorService es = Executors.newFixedThreadPool(4); //line n1
Future f1 = es.submit (newCallerThread("Call"));
String str = f1.get().toString();
Which statement is true?
A. The program prints Call Call and terminates.
B. The program prints Call Call and does not terminate.
C. A compilation error occurs at line n1.
D. An ExecutionException is thrown at run time.
Answer: B

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NO.8 Given the code fragment:
int b = 3;
if ( !(b > 3)) {
System.out.println("square ");
System.out.println("circle ");
What is the result?
A. square...
B. circle...
C. squarecircle...
D. Compilation fails.
Answer: C

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試験科目:Java SE 8 Programmer II
問題と解答:全128問 1z0-809 日本語講座

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試験科目:Java SE 8 Programmer II
問題と解答:全128問 1z1-809 真実試験

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投稿日: 2015/10/29 14:46:31  |  カテゴリー: Oracle  |  タグ: 1z1-809問題集1z0-809問題集1z1-809認定試験1z0-809認定試験