Online Access Free 1Z0-819 Practice Test

Given the Customer table structure:
* ID Number Primary Key
* NAME Text Nullable
Given code fragment:

Which statement inserted on line 14 sets NAME column to a NULL value?

• A.Stmt.setNull(2, java,sql. Types, VARCHAR);
• B.Stmt.setNull(2 string, class);
• C.Stmt.setNull(2, null);
• D.Stmt.setNull(2, java.lang, string);

Given:

Which two interfaces can be used in lambda expressions? (Choose two.)

• A.MyInterface5
• B.MyInterface1
• C.MyInterface2
• D.MyInterface4
• E.MyInterface3

Which two statements are true about Java modules? (Choose two.)

• A.Modular jars loaded from -classpath are automatic modules.
• B.Modular jars loaded from --module-path are automatic modules.
• C.Classes found in -classpath are part of an unnamed module.
• D.Any named module can directly access all classes in an automatic module.
• E.If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.

Which two statements independently compile? (Choose two.)

• A.List<? super Float> list = new ArrayList<Double>();
• B.List<? extends Number> list = new ArrayList<Object>();
• C.List<? super Short> list = new ArrayList<Number>();
• D.List<? extends Number> list = new ArrayList<Byte>();
• E.List<? super Number> list = new ArrayList<Integer>();

Given:

Which statement is true?

• A.The code fails to compile as MyResource must implement Closeable.
• B.The code fails to compile as try-try-resource needs a variable declaration such as MyResource r1= res1; MyResource r2 = res2;.
• C.The code compiles successfully.
• D.The code fails to compile as res2 should be declared as final.