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Valid 1z1-819 test answers & Oracle 1z1-819 exam pdf

Who should take the Java SE 11 Developer Exam Number: 1Z0-819

This exam helps students to understand the basic relational database concepts. Moreover, it will teach the students about data modeling concepts, building Entity Relationship Diagrams (ERDs), and mapping ERDs. Moreover, with this project-based learning techniques, students will be able to create and work with projects to design, implement, and demonstrate a database solution for a business or organization.

Certification Path for Java SE 11 Developer Exam Number: 1Z0-819

Java SE 11 Developer Exam Number: 1Z0-819 is a fundamental exam. Successful completion by candidates will allow them to achieve Oracle Certified Professional: Java SE 11 Developer.

Exam Topic for Java SE 11 Developer Exam Number: 1Z0-819

下面将讨论 ORACLE 1Z0-006 exam dumps:

• Annotations
• Java I/O API
• Database Applications with JDBC
• Working with Java data types
• Java Platform Module System
• Working with Arrays and Collections

问题 113
鉴于

哪种说法是正确的？

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

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

 Only LocalDate class from java.time package is loaded.

 Tester must import java.time.LocalDate in order to compile.

问题 114
鉴于

哪个是真的？

 The code compiles but does not print any result.

 The code prints 25.

 The code does not compile.

 The code throws an exception at runtime.

问题 115
给出代码片段：

结果如何？

 1

 The compilation fails at line

 10

 The compilation fails at line 16.

 The compilation fails at line 13.

问题 116
Analyze the code:

Which two options can you insert inside println method to produce Global:namescope? (Choose two.)

 Test.prefix+Test.name

 new Test().prefix+new Test().name

 Test.prefix+Test.getName()

 Test.getName+prefix

 prefix+Test.name

 prefix+name

问题 117
鉴于

我们可以在哪一行后插入 assert i < 0 || values[i] <= values[i + 1]; 来验证值数组是否已部分排序？

 第 8 行之后

 第 6 行之后

 第 5 行之后

 第 10 行之后

问题 118
给出代码片段：

结果如何？

 2

 -1

 1

 -3

问题 119
鉴于

executed with this command:
java Main one two three
What is the output of this class?

 The compilation fails.

 1) one2) two3) three

 A java.lang.ArrayIndexOutOfBoundsException is thrown.

 1) one

 nothing

问题 120
给出代码片段：

结果如何？

 EUR -> 0.84
GBP -> 0.75
USD -> 1.00
CNY -> 6.42

 The compilation fails.

 CNY -> 6.42
EUR -> 0.84
GBP -> 0.75
USD -> 1.00

 USD -> 1.00
GBP -> 0.75
EUR -> 0.84
CNY -> 6.42

说明
自动生成文字说明

问题 121
鉴于

Which two constructors will compile and set the class field strings? (Choose two.)

 方案 A

 方案 B

 选项 C

 选项 D

 方案 E

问题 122
检查这些模块声明：

哪两个说法是正确的？(请选择两项）。

 ServiceProvider 模块是唯一能在运行时提供 com.example.api API 的模块。

 将 com.example.api API 放在单独的模块 ServiceAPI 中，可以方便地安装多个提供程序模块。

 消费者模块应需要服务提供者模块。

 ServiceProvider 模块应导出 com.myimpl 软件包。

 服务提供程序模块不知道使用服务提供程序的模块（如消费者）的身份。

com.example.api API。

问题 123
鉴于

结果如何？

 watermelonorangelemongrapeapricotapple

 nothing

 appleapricotgrapelemonorangewatermelon

 appleorangegrapelemonapricotwatermelon

问题 124
鉴于

Which would cause s to be AQCD?

 s.replace(s.indexOf(“A”), s.indexOf(“C”), “Q”);

 s.replace(s.indexOf(“B”), s.indexOf(“C”), “Q”);

 s.replace(s.indexOf(“B”), s.indexOf(“B”), “Q”);

 s.replace(s.indexOf(“A”), s.indexOf(“B”), “Q”);

问题 125
Consider this method declaration:

A) “SET SESSION AUTHORIZATION ” + user
B) “SET SESSION AUTHORIZATION ” + stmt.enquoteIdentifier(user)
Is A or B the correct replacement for <EXPRESSION> and why?

 A, because it sends exactly the value of user provided by the calling code.

 B, because enquoting values provided by the calling code prevents SQL injection.

 A and B are functionally equivalent.

 A, because it is unnecessary to enclose identifiers in quotes.

 B, because all values provided by the calling code should be enquoted.

问题 126
鉴于

Which three classes successfully override showFirst ()?
A)

B)

C)

D)

E)

F)

 方案 A

 方案 B

 选项 C

 选项 D

 方案 E

 Option F

问题 127
给出代码片段：

结果如何？

 13 5 7 9

 1 3 5 7 9 11

 2 4 6 B 10

 2 4 6 8

问题 128
鉴于

What is required to make the Foo class thread safe?

 No change is required.

 Make the declaration of lock static.

 Replace the lock constructor call with new ReentrantLock (true).

 Move the declaration of lock inside the foo method.

问题 129
鉴于

结果如何？

 watermelonorangelemongrapeapricotapple

 nothing

 appleapricotgrapelemonorangewatermelon

 appleorangegrapelemonapricotwatermelon

问题 130
鉴于
公共类 X {
}
和
公共 final class Y extends X {
}
编译这两个类的结果是什么？

 编译失败的原因是类 X 中没有定义零 args 构造函数。

 编译失败的原因是类 X 或类 Y 都需要实现 toString() 方法。

 编译失败的原因是 final 类不能扩展另一个类。

 汇编》成功了。

问题 131
鉴于

Which is true about line 1?

 If the value is not present, a NoSuchElementException is thrown at run time.

 It always executes the System.out::print statement.

 If the value is not present, a NullPointerException is thrown at run time.

 If the value is not present, nothing is done.

问题 132
鉴于

结果如何？

 2134

 2143

 214

 234

 加载中 …

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