1Z0-819 無料問題集「Oracle Java SE 11 Developer」

（A）

（B）

（C）

（D）

（A）5 4 3 2 1 4 3 2 1 3 2 1 2 1 1

（B）5

（C）nothing

（D）5 4 3 2 1

（A）sphynx
oxicat
laperm
korat
bengal
abyssinian

（B）nothing

（C）abyssinian
oxicat
korat
laperm
bengal
sphynx

（D）abyssinian
bengal
korat
laperm
oxicat
sphynx

（A）Java automatically parallelizes code execution.

（B）Java has a library of built-in functions that can be used to enable pipeline burst execution.

（C）Java monitors and optimizes code that is frequently executed.

（D）Java prioritizes garbage collection.

（A）It must be defined with the public access modifier.

（B）It must be annotated with @FunctionalInterface.

（C）It is declared with a single default method.

（D）It cannot have any private methods and static methods.

（E）It is declared with a single abstract method.

（A）ab cd ef

（B）ad be cf

（C）An ArrayIndexOutOfBoundsException is thrown at runtime.

（D）abc def

（E）The compilation fails.

（A）[A, B, C]
[A, B, C]

（B）On line 9, an exception is thrown at run time.

（C）[A, B, C]
[A, B]

（D）[A, B, C]
followed by an exception thrown on line 11.

（A）java Hello.java

（B）jdeps --list-deps

（C）jmod describe

（D）jar --show-module-resolution

（E）java --show-module-resolution

（A）234

（B）2134

（C）2143

（D）214

（A）@SuppressWarnings on the main and print methods

（B）@SuppressWarnings("all") on the main and print methods

（C）@SuppressWarnings("rawtypes") on main and @SafeVarargs on the print method

（D）@SuppressWarnings("unchecked") on main and @SafeVarargs on the print method

（A）All classes from the package java.time. are loaded for the class Diary.

（B）Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.

（C）Tester must import java.time.LocalDate in order to compile.

（D）Only LocalDate class from java.time package is loaded.

（A）The body of foo can throw FooException or one of its subclasses.

（B）FooException is unchecked.

（C）The body of foo can only throw FooException.

（D）FooException is a subclass of RuntimeError.

（A）An indexOutofBoundsException is thrown at runtime.

（B）Hat at store 1

（C）Hat at store 4

（D）At once 0

（E）At once 1

（A）Stmt.setNull(2, java.lang, string);

（B）Stmt.setNull(2, java,sql. Types, VARCHAR);

（C）Stmt.setNull(2, null);

（D）Stmt.setNull(2 string, class);

（A）Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.

（B）Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.

（C）The program prints 1 4 2 3, but the order is unpredictable.

（D）Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.

（E）The output will be exactly 2 1 3 4 5.

（A）false false true

（B）false true true

（C）true false false

（D）false true false

（A）Livelock

（B）Race Condition

（C）Deadlock

（D）Starvation

（A）1

（B）1

（C）The program prints nothing.

（D）It prints 1 in infinite loop.

（E）0

（F）0