oracle 1z0-811 practice test

Given:

What is the result?

• A. [null:-]
• B. [ : ]
• C. [null:null]
• D. [:null]

Which two Java reserved words are used to implement encapsulation?

• A. final
• B. static
• C. public
• D. extends
• E. private

Given the code fragment:

Which code fragment can be inserted at line n1 to enable the code to print 0.0?
A.
Ball b = null;
b.weight = 0.0;
B.
Ball.weight = 0.0;
C.
Ball b = new Ball(0.0);
D.
Ball b = new Ball();

Which two statements are true about the Java Runtime Environment (JRE)?

• A. It is responsible for garbage collection.
• B. It interprets bytecode stored in a .class file.
• C. It contains the JDK and Java APIs.
• D. It is platform independent.
• E. You must install the JRE to compile a .java file.

Identify two features of Java.

• A. architecture dependent
• B. platform independent
• C. single threaded
• D. robust

Given:

What is the result?

• A. 300
• B. 100
• C. 200
• D. A compilation error occurs.

Given the code fragment:

What is the result?
A.
A compilation error occurs.
B.
A runtime exception is thrown.
C.
Julia
Peter
D.
Peter
Julia

Given the code fragment:

Which code fragment can be inserted at line n1 to enable the code to compile?

• A. new int num[];
• B. int[] num;
• C. int[10] num;
• D. int num[10];

Given the code fragment:

What is the result?
A.
B.
C.
D.

Given the code fragment:

What is the result?
A.
Unknown issues.
Invalid divisor.
B.
Unknown issues.
C.
Invalid divisor.
D.
A compilation error occurs.