1Z0-819 PDF Download Mar-2025 Oracle Test To Gain Brilliante Result!
Provide Updated Oracle 1Z0-819 Dumps as Practice Test and PDF
NEW QUESTION # 155
Given:
What is the result?
- A. Y@<< hashcode>>
- B. The compilation fails.
- C. HH
- D. Null
Answer: A
NEW QUESTION # 156
Which two statements are correct about try blocks? (Choose two.)
- A. catch blocks must be ordered from generic to specific exception types.
- B. A try block can have more than one catch block.
- C. A try block must have a catch block and a finally block.
- D. A finally block must be immediately placed after the try or catch blocks.
- E. A finally block in a try-with-resources statement executes before the resources declared are closed.
Answer: B,D
NEW QUESTION # 157
Given:
Which two are correct? (Choose two.)
- A. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.
- B. The output will be exactly 2 1 3 4 5.
- C. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
- D. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
- E. The program prints 1 4 2 3, but the order is unpredictable.
Answer: D,E
Explanation:
NEW QUESTION # 158
Given:
What is the result?
- A. On line 9, an exception is thrown at run time.
- B. [A, B, C]
[ B, C] - C. [A, B, C]
[A, B, C] - D. [A, B, C]
followed by an exception thrown on line 11.
Answer: C
NEW QUESTION # 159
Given:
What is required to make the Foo class thread safe?
- A. No change is required.
- B. Make the declaration of lock static.
- C. Move the declaration of lock inside the foo method.
- D. Replace the lock constructor call with new ReentrantLock (true).
Answer: D
NEW QUESTION # 160
Given the code fragment:
What is the result?
- A. An ArrayIndexOutOfBoundsException is thrown at runtime.
- B. The compilation fails.
- C. abc def
- D. ab cd ef
- E. ad be cf
Answer: E
NEW QUESTION # 161
Given:
What is the result?
- A. 3 5 3 3
- B. 3 5 3 5
- C. 3 3 3 3
- D. 5 5 3 3
Answer: A
Explanation:
NEW QUESTION # 162
Examine this excerpt from the declaration of the java.se module:
What does the transitive modifier mean?
- A. Only a module that requires the java.se module is permitted to require the java.sql module.
- B. Any module that attempts to require the java.se module actually requires the java.sql module instead.
- C. Any module that requires the java.sql module does not need to require the java.se module.
- D. Any module that requires the java.se module does not need to require the java.sql module.
Answer: A
NEW QUESTION # 163
Given:
Which three classes successfully override printOne()? (Choose three.)
- A. Option B
- B. Option E
- C. Option D
- D. Option A
- E. Option C
- F. Option F
Answer: C,D,E
NEW QUESTION # 164
Which three initialization statements are correct? (Choose three.)
- A. float x = 1f;
- B. String contact# = "(+2) (999) (232)";
- C. byte b = 10;
char c = b; - D. boolean false = (4 != 4);
- E. int[][][] e = {{1,1,1},{2,2,2}};
- F. short sh = (short)'A';
- G. int x = 12_34;
Answer: A,F,G
NEW QUESTION # 165
Given:
You want to examine the items list it contains an item for which the variable count is below zero.
Which code fragment at line 1 accomplish this?
- A. If (items.stream () .filter (i -> count < 0) . findFirst () ) {
- B. If (items.stream () .anymatch (i -> count < 0) < 0) ) {
- C. If (items.stream () .filter (i -> count < 0) . findAny () ) {
- D. If (items.stream () .allmatch (i -> count < 0) < 0) ) {
Answer: A
NEW QUESTION # 166
Given:
Which expression when added at line 1 will produce the output of 1.17?
- A. float z = Math.round((int)(x/y),2);
- B. float z = (float)(Math.round((float)x/y*100)/100);
- C. float z = Math.round((float)x/y,2);
- D. float z = Math.round((float)x/y*100)/(float)100;
Answer: D
Explanation:
NEW QUESTION # 167
Given:
What is the output?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION # 168
There is a copyServiceAPI that has the org.copyservice. spi. Copy interface To use this service in a module, which module- info.java would be correct?
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION # 169
Given:
Which loop incurs a compile time error?
- A. the loop starting line 11
- B. the loop starting line 7
- C. the loop starting line 14
- D. the loop starting line 3
Answer: C
NEW QUESTION # 170
Given the code fragment:
Path currentFile = Paths.get("/scratch/exam/temp.txt");
Path outputFile = Paths get("/scratch/exam/new.txt");
Path directory = Paths.get("/scratch/");
Files.copy(currentFile, outputFile);
Files.copy(outputFile, directory);
Files.delete (outputFile);
The /scratch/exam/temp.txt file exists. The /scratch/exam/new.txt and /scratch/new.txt files do not exist.
What is the result?
- A. The program throws a NoSuchFileException.
- B. The program throws a FileaAlreadyExistsException.
- C. A copy of /scratch/exam/new.txt exists in the /scratch directory and /scratch/exam/new.txt is deleted.
- D. /scratch/exam/new.txt and /scratch/new.txt are deleted.
Answer: A
Explanation:
NEW QUESTION # 171
Given:
What is the result?
- A. Hat at store 4
- B. At once 1
- C. At once 0
- D. Hat at store 1
- E. An indexOutofBoundsException is thrown at runtime.
Answer: D
NEW QUESTION # 172
Given:
Which two interfaces can be used in lambda expressions? (Choose two.)
- A. MyInterface4
- B. MyInterface3
- C. MyInterface2
- D. MyInterface5
- E. MyInterface1
Answer: C,D
NEW QUESTION # 173
Given:
What is the type of x?
- A. char
- B. List<String>
- C. String
- D. List<Character>
Answer: C
NEW QUESTION # 174
Given:
You want the code to produce this output:
John
Joe
Jane
Which code fragment should be inserted on line 1 and line 2 to produce the output?
- A. Insert Comparator<Person> on line 1.
Insert
public int compareTo(Person person) {
return person.name.compareTo(this.name);
}
on line 2. - B. Insert Comparable<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2. - C. Insert Comparator<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2. - D. Insert Comparator<Person> on line 1.
Insert
public int compare(Person person) {
return person.name.compare(this.name);
}
on line 2.
Answer: A
NEW QUESTION # 175
Analyze the code:
Which two options can you insert inside println method to produce Global:namescope? (Choose two.)
- A. Test.prefix+Test.getName()
- B. prefix+Test.name
- C. prefix+name
- D. new Test().prefix+new Test().name
- E. Test.getName+prefix
- F. Test.prefix+Test.name
Answer: A,D
NEW QUESTION # 176
Which interface in the java.util.function package will return a void return type?
- A. Supplier
- B. Function
- C. Predicate
- D. Consumer
Answer: D
NEW QUESTION # 177
......
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