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[General] Oracle 1z0-809 Questions: Tips to Get Results Effortlessly [2026]

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【General】 Oracle 1z0-809 Questions: Tips to Get Results Effortlessly [2026]

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Oracle 1z0-809 exam, also known as the Java SE 8 Programmer II exam, is designed to test the knowledge and skills of Java programmers who have experience with the Java programming language and the Java SE 8 platform. 1z0-809 exam is the second of two exams required to become an Oracle Certified Professional, Java SE 8 Programmer. It is intended for developers who have a strong foundation in Java and want to demonstrate their proficiency in advanced Java programming concepts and techniques.
The Oracle 1z0-809 Exam is intended for professionals who have already obtained the Oracle Certified Associate (OCA) certification and are interested in advancing their career in the field of Java development. It is also suitable for those with basic knowledge and experience in Java programming who want to improve their skills and knowledge of the language.
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Oracle Java SE 8 Programmer II Sample Questions (Q73-Q78):NEW QUESTION # 73
Given:

and the command:
java Product 0
What is the result?
  • A. A NumberFormatException is thrown at run time.
  • B. New Price: 0.0
  • C. A compilation error occurs at line n1.
  • D. An AssertionError is thrown.
Answer: B

NEW QUESTION # 74
Given the code fragments:
interface CourseFilter extends Predicate<String> {
public default boolean test (String str) {
return str.equals ("Java");
}
}
and
List<String> strs = Arrays.asList("Java", "Java EE", "Java ME");
Predicate<String> cf1 = s - > s.length() > 3;
Predicate cf2 = new CourseFilter() { //line n1
public boolean test (String s) {
return s.contains ("Java");
}
};
long c = strs.stream()
.filter(cf1)
.filter(cf2//line n2
.count();
System.out.println(c);
What is the result?
  • A. 0
  • B. A compilation error occurs at line n1.
  • C. 1
  • D. A compilation error occurs at line n2.
Answer: C

NEW QUESTION # 75
Given:
public class Test<T> {
private T t;
public T get () {
return t;
}
public void set (T t) {
this.t = t;
}
public static void main (String args [ ] ) {
Test<String> type = new Test<>();
Test type 1 = new Test ();//line n1
type.set("Java");
type1.set(100);//line n2
System.out.print(type.get() + " " + type1.get());
}
}
What is the result?
  • A. A compilation error occurs. To rectify it, replace line n2 with:
    type1.set (Integer(100));
  • B. Java 100
  • C. java.lang.string@<hashcode>java.lang.Integer@<hashcode>
  • D. A compilation error occurs. To rectify it, replace line n1 with:
    Test<Integer> type1 = new Test<>();
Answer: B

NEW QUESTION # 76
Assume customers.txt is accessible and contains multiple lines.
Which code fragment prints the contents of the customers.txt file?
  • A. Stream<ath> stream = Files.list (Paths.get ("customers.txt")); stream.forEach( c) -> System.out.println(c));
  • B. Stream<String> stream = Files.find (Paths.get ("customers.txt")); stream.forEach((String c) -> System.out.println(c));
  • C. Stream<String> lines = Files.lines (Paths.get ("customers.txt")); lines.forEach( c) -> System.out.println(c));
  • D. Stream<ath> stream = Files.find (Paths.get ("customers.txt")); stream.forEach( c) -> System.out.println(c));
Answer: B

NEW QUESTION # 77
Given the content of the employee.txtfile:
Every worker is a master.
Given that the employee.txtfile is accessible and the file allemp.txtdoes NOT exist, and the code fragment:

What is the result?
  • A. allemp.txt is created and the content of employee.txt is copied to it.
  • B. Exception 2
  • C. The program executes, does NOT affect the system, and produces NO output.
  • D. Exception 1
Answer: D

NEW QUESTION # 78
......
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