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[General] Oracle 1z0-809 Latest Test Camp: Java SE 8 Programmer II - PrepAwayPDF Free Down

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【General】 Oracle 1z0-809 Latest Test Camp: Java SE 8 Programmer II - PrepAwayPDF Free Down

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The Oracle 1z0-809 exam consists of 85 multiple-choice and drag-and-drop questions, which you must complete within 150 minutes. 1z0-809 exam covers a range of topics, including Java Class Design, Generics and Collections, Lambda Built-in Functional Interfaces, Java Stream API, Java I/O Fundamentals, Java Concurrency, Building Database Applications with JDBC, and Localization. Passing the Oracle 1z0-809 Exam is a great way to demonstrate your advanced Java programming skills and enhance your career opportunities in the field of software development.
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Oracle Java SE 8 Programmer II Sample Questions (Q93-Q98):NEW QUESTION # 93
Given the definition of the Country class:
public class country {
public enum Continent {ASIA, EUROPE}
String name;
Continent region;
public Country (String na, Continent reg) {
name = na, region = reg;
}
public String getName () {return name;}
public Continent getRegion () {return region;}
}
and the code fragment:
List<Country> couList = Arrays.asList (
new Country ("Japan", Country.Continent.ASIA),
new Country ("Italy", Country.Continent.EUROPE),
new Country ("Germany", Country.Continent.EUROPE));
Map<Country.Continent, List<String>> regionNames = couList.stream ()
.collect(Collectors.groupingBy (Country ::getRegion,
Collectors.mapping(Country::getName, Collectors.toList()))));
System.out.println(regionNames);
What is the output?
  • A. {EUROPE = [Germany, Italy], ASIA = [Japan]}
  • B. {EUROPE = [Italy, Germany], ASIA = [Japan]}
  • C. {EUROPE = [Germany], EUROPE = [Italy], ASIA = [Japan]}
  • D. {ASIA = [Japan], EUROPE = [Italy, Germany]}
Answer: B

NEW QUESTION # 94
Given:
public class Canvas implements Drawable {
public void draw () { }
}
public abstract class Board extends Canvas { }
public class Paper extends Canvas {
protected void draw (int color) { }
}
public class Frame extends Canvas implements Drawable {
public void resize () { }
}
public interface Drawable {
public abstract void draw ();
}
Which statement is true?
  • A. Framedoes not compile.
  • B. Paperdoes not compile.
  • C. Drawabledoes not compile.
  • D. Boarddoes not compile.
  • E. All classes compile successfully.
Answer: E

NEW QUESTION # 95
Which two statements are true about localizing an application? (Choose two.)
  • 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. Resource bundle files include data and currency information.
  • D. Language codes use lowercase letters and region codes use uppercase letters.
  • E. Language and region-specific programs are created using localized data.
Answer: A,D
Explanation:
Explanation/Reference:
Reference: http://docs.oracle.com/javase/7/docs/technotes/guides/intl/

NEW QUESTION # 96
Given:

Which two interfaces can you use to create lambda expressions? (Choose two.)
  • A. Q
  • B. R
  • C. S
  • D. T
  • E. P
  • F. U
Answer: C,E

NEW QUESTION # 97
Given the code fragment:

Which code fragment, when inserted at line 9, enables the code to print true?
  • A. String str2 = sb1.toString ( );
  • B. String str2 = "Duke";
  • C. String str2 = str1;
  • D. String str2 = new String (str1);
Answer: C
Explanation:
StringBuilder sb1 = new StringBuilder("Duke");
String str1 = sb1.toString();
String str2 = str1;
//String str2 = "Duke";
//String str2 = new String(str1);
System.out.println(str1 == str2);
}}

NEW QUESTION # 98
......
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