Oracle Java Foundations - 1z1-811 模擬練習

A. num = 100

B. num = 99

C. num = 0

D. The program executes indefinitely.

A. 100

B. 200

C. 300

D. A compilation error occurs.

A. only MyClassB and MyClassD

B. MyClassA, MyClassB, MyClassC, and MyClassD

C. only MyClassB, MyClassC, and MyClassD

D. only MyClassB

A. 45678

B. 3456789

C. 4567889

D. 456789

A. [:null]

B. [null:-]

C. [ : ]

D. [null:null]

A. 3

B. 8

C. 0

D. A compilation error occurs.

A. It can be used to assign data to instance members.

B. It must be declared private.

C. It returns mutated instance members.

D. It replaces the default constructor.

A. for(int idx = 0; idx < arr.length; idx++) {
System.out.print (arr[idx]);
}

B. for(int idx = 0; idx < arr.length; idx+=2) {
System.out.print (arr[idx]);
}

C. for(int idx = 1; idx < arr.length; idx+=2) {
System.out.print (arr[idx]);
}

D. for(int idx = 1; idx < arr.length-1; idx++) {
System.out.print (arr[idx++]);
}