합리적인 비용으로 Oracle Java Standard Edition 6 Programmer Certified Professional 시험을 준비하고 싶으신가요? KoreaDumps에서는 1Z0-851 연습문제 구매를 고려하시는 분께 할인코드를 제공해 드립니다.

Oracle 1Z0-851 시험 개요:

Oracle 1Z0-851 시험 요강 주제:

Oracle 1Z0-851 시험 궁금증 해소 코너

최신 OCJP 1Z0-851 무료샘플문제

문제 #1

Given:
10.public class Foo {
11.static int[] a;
12.static { a[0]=2; }
13.public static void main( String[] args ) {}
14.}
Which exception or error will be thrown when a programmer attempts to run this code?

A. java.lang.IllegalStateException
B. java.lang.ArrayIndexOutOfBoundsException
C. java.lang.StackOverflowError
D. java.lang.ExceptionInInitializerError

문제 #2

Given:
1.interface DoStuff2 {
2.float getRange(int low, int high); }
3.4.
interface DoMore {
5.float getAvg(int a, int b, int c); }
6.7.
abstract class DoAbstract implements DoStuff2, DoMore { }
8.9.
class DoStuff implements DoStuff2 {
10.public float getRange(int x, int y) { return 3.14f; } }
11.12.
interface DoAll extends DoMore {
13.float getAvg(int a, int b, int c, int d); } What is the result?

A. Compilation fails. Lines 7, 12, and 13 contain errors.
B. Compilation fails. Only lines 7 and 12 contain errors.
C. Compilation fails. Only line 13 contains an error.
D. The file will compile without error.
E. Compilation fails. Only lines 7 and 13 contain errors.
F. Compilation fails. Only line 12 contains an error.
G. Compilation fails. Only line 7 contains an error.

문제 #3

Given:
1.public class KungFu {
2.public static void main(String[] args) {
3.Integer x = 400;
4.Integer y = x;
5.x++;
6.StringBuilder sb1 = new StringBuilder("123");
7.StringBuilder sb2 = sb1;
8.sb1.append("5");
9.System.out.println((x==y) + " " + (sb1==sb2));
10.}
11.}
What is the result?

A. An exception is thrown at runtime.
B. Compilation fails.
C. true true
D. false true
E. true false
F. false false

문제 #4

Given:
11.// insert code here
12.private N min, max;
13.public N getMin() { return min; }
14.public N getMax() { return max; }
15.public void add(N added) {
16.if (min == null || added.doubleValue() < min.doubleValue())
17.min = added;
18.if (max == null || added.doubleValue() > max.doubleValue())
19.max = added;
20.}
21.}
Which two, inserted at line 11, will allow the code to compile? (Choose two.)

A. public class MinMax<N extends Integer> {
B. public class MinMax<N extends Object> {
C. public class MinMax<?> {
D. public class MinMax<N extends Number> {
E. public class MinMax<? extends Object> {
F. public class MinMax<? extends Number> {

문제 #5

Given:
1.interface A { public void aMethod(); }
2.interface B { public void bMethod(); }
3.interface C extends A,B { public void cMethod(); }
4.class D implements B {
5.public void bMethod(){}
6.}
7.class E extends D implements C {
8.public void aMethod(){}
9.public void bMethod(){}
10.public void cMethod(){}
11.}
What is the result?

A. Compilation fails because of an error in line 7.
B. Compilation fails because of an error in line 9.
C. If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 9.
D. Compilation fails because of an error in line 3.
E. If you define D e = new E(), then e.bMethod() invokes the version of bMethod() defined in Line
5.E. If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 5.

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