單項選擇題

public class IfTest （
public static void main（stringargs） {
int x = 3；
int y = 1；
if （x = y）
system.out.printIn（“Not equal”）；
else
system.out.printIn（“Equal”）；
}
）
What is the result？（）

A. The output is “Equal”
B. The output in “Not Equal”
C. An error at line 5 causes compilation to fall.
D. The program executes but does not print a message.

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單項選擇題

Which statement is true for the class java.util.HashSet？（）

A. The elements in the collection are ordered.
B. The collection is guaranteed to be immutable.
C. The elements in the collection are guaranteed to be unique.
D. The elements in the collection are accessed using a unique key.
E. The elements in the collections are guaranteed to be synchronized.

單項選擇題

You need to store elements in a collection that guarantees that no duplicates are stored and all elements can be accessed in natural order. Which interface provides that capability？（）

A. Java.util.Map.
B. Java.util.Set.
C. Java.util.List.
D. Java.util.StoredSet.
E. Java.util.StoredMap.
F. Java.util.Collection.

public class IfTest （ public static void main（stringargs） { int x = 3； int y = 1； if （x = y） system.out.printIn（“Not equal”）； else system.out.printIn（“Equal”）； } ） What is the result？（）

你可能感興趣的試題

Which statement is true for the class java.util.HashSet？ （）

You need to store elements in a collection that guarantees that no duplicates are stored and all elements can be accessed in natural order. Which interface provides that capability？（）

public class IfTest （
public static void main（stringargs） {
int x = 3；
int y = 1；
if （x = y）
system.out.printIn（“Not equal”）；
else
system.out.printIn（“Equal”）；
}
）
What is the result？（）

Which statement is true for the class java.util.HashSet？（）