1Z0-815 試験問題を無料オンラインアクセス

Given:
class Overloading {
int x(double d) {
System.out.println("one");
return 0;
}
String x(double d) {
System.out.println("two");
return null;
}
double x(double d) {
System.out.println("three");
return 0.0;
}
public static void main(String[] args) {
new Overloading().x(4.0);
}
}
What is the result?

• A.three
• B.two
• C.Compilation fails.
• D.one

Given:

Why does D cause a compilation error?

• A.D does not define any method.
• B.D extends more than one interface.
• C.D inherits a() from B and C but the return types are incompatible.
• D.D inherits a() only from C.

Which set of commands is necessary to create and run a custom runtime image from Java source files?

• A.jar, jlink
• B.javac, jlink
• C.java, jdeps
• D.javac, jar

Given:

What is the result?

• A.3
• B.1
• C.b3
• D.b1
• E.b2
• F.2
• G.The compilation fails due to an error in line 1.

Given:

Which is true?

• A.The code does not compile.
• B.The code compiles but does not print any result.
• C.The code throws an exception at runtime.
• D.The code prints 25.