Given:

When the doSomething method is called, after which line does the Object created in line 5 become available for garbage collection?（）

单项选择题Given: What is the result?（）

A.1
B.2
C.12
D.Compilation fails.
E.No output is produced.
F.An exception is thrown at runtime.

多项选择题Given: and the command line: java -Dprop.custom=gobstopper Commander Which two, placed on line 13, will produce the output gobstopper?（）

A.System.load("prop.custom");
B.System.getenv("prop.custom");
C.System.property("prop.custom");
D.System.getProperty("prop.custom");
E.System.getProperties().getProperty("prop.custom");

单项选择题Given: What is the result?（）

A.s14
B.s16
C.s10
D.Compilation fails.
E.An exception is thrown at runtime.

多项选择题A developer is creating a class Book, that needs to access class Paper. The Paper class is deployed in a JAR named myLib.jar. Which three, taken independently, will allow the developer to use the Paper class while compiling the Book class?（）

A. The JAR file is located at $JAVA_HOME/jre/classes/myLib.jar.
B. The JAR file is located at $JAVA_HOME/jre/lib/ext/myLib.jar..
C. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar/Paper.class.
D. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar.
E. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -cp /foo/myLib.jar/Paper Book.java.
F. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -d /foo/myLib.jar Book.java
G. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -classpath /foo/myLib.jar Book.java

多项选择题Click the Exhibit button. Which three code fragments, added individually at line 29, produce the output 100?（）

A.n = 100;
B.i.setX( 100 );
C.o.getY().setX( 100 );
D.i = new Inner(); i.setX( 100 );
E.o.setY( i ); i = new Inner(); i.setX( 100 );
F.i = new Inner(); i.setX( 100 ); o.setY( i );