Online Access Free 1Z0-853 Practice Test

Given:
10.
class One {
11.
public One foo() { return this; }
12.
}
13.
class Two extends One {
14.
public One foo() { return this; }
15.
}
16.
class Three extends Two {
17.
// insert method here
18.
}
Which two methods, inserted individually, correctly complete the Three class? (Choose two.)

• A.public int foo() { return 3; }
• B.public One foo() { return this; }
• C.public void foo() {}
• D.public Two foo() { return this; }
• E.public Object foo() { return this; }

Given:
1.interface TestA { String toString(); }
2.public class Test {
3.public static void main(String[] args) {
4.System.out.println(new TestA() {
5.public String toString() { return "test"; }
6.});
7.}
8.}
What is the result?

• A.Compilation fails because of an error in line 4.
• B.Compilation fails because of an error in line 5.
• C.null
• D.Compilation fails because of an error in line 1.
• E.An exception is thrown at runtime.
• F.test

Which three will compile and run without exception? (Choose three.)

• A.void go() {
  Object o = new Object();
  synchronized(o) { /* code here */ }
• B.public synchronized void go() { /* code here */ }
• C.private synchronized Object o;
• D.void go() {
  synchronized() { /* code here */ }
• E.void go() {
  synchronized(Object.class) { /* code here */ }
• F.private synchronized(this) void go() { /* code here */ }

Given a valid DateFormat object named df, and
16.
Date d = new Date(0L);
17.
String ds = "December 15, 2004";
18.
// insert code here
What updates d's value with the date represented by ds?

• A.18. d = df.parse(ds);
• B.18. try {
  19.
  d = df.parse(ds);
  20.
  } catch(ParseException e) { };
• C.18. d = df.getDate(ds);
• D.18. try {
  19.
  d = df.getDate(ds);
  20.
  } catch(ParseException e) { };

Given:
11.
String test = "This is a test";
12.
String[] tokens = test.split("\s");
13.
System.out.println(tokens.length);
What is the result?

• A.4
• B.Compilation fails.
• C.An exception is thrown at runtime.
• D.0
• E.1