Given:
35.String #name = "Jane Doe";
36.int $age = 24;
37.Double _height = 123.5;
38.double ~temp = 37.5;
Which two statements are true?()
A.Line 35 will not compile.
B.Line 36 will not compile.
C.Line 37 will not compile.
D.Line 38 will not compile.
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Given:
What is the result?()
A.An exception is thrown at runtime.
B.Compilation fails because of an error in line 7.
C.Compilation fails because of an error in line 4.
D.Compilation succeeds and no runtime errors with class A occur.
Given:
What is the result?()
A.13
B.134
C.1234
D.2134
Given:
Which two methods, inserted independently at line 17, correctly complete the Sales class?()
A.double getSalesAmount() { return 1230.45; }
B.public double getSalesAmount() { return 1230.45; }
C.private double getSalesAmount() { return 1230.45; }
D.protected double getSalesAmount() { return 1230.45; }
Given:
Which three methods, inserted individually at line 14, will correctly complete class Two?()
A.int foo() { /* more code here */ }
B.void foo() { /* more code here */ }
C.public void foo() { /* more code here */ }
D.private void foo() { /* more code here */ }
E.protected void foo() { /* more code here */ }
Given:
What is the result?()
A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "bar".
D.The code executes normally, but nothing prints.
Given:
What is the result?()
A.Cat
B.Dog
C.Compilation fails.
D.The code runs with no output.
E.An exception is thrown at runtime.
A.The Thread.sleep() method can take t1 as an argument.
B.The Object.notify() method can take t1 as an argument.
C.The Thread.yield() method can take t1 as an argument.
D.The Thread.setPriority() method can take t1 as an argument.
E.The Object.notify() method arbitrarily chooses which thread to notify.
Given:
Which two changes, taken together, would guarantee the output: 1, 2, 3, 4, 5, ?()
A.move the line 12 print statement into the foo() method
B.change line 7 to public synchronized void go() {
C.change the variable declaration on line 2 to private volatile int x;
D.wrap the code inside the foo() method with a synchronized( this ) block
A.private synchronized Object o;
B.void go() {synchronized() { /* code here */ }
C.public synchronized void go() { /* code here */ }
D.private synchronized(this) void go() { /* code here */ }
E.void go() {synchronized(Object.class) { /* code here */ }
F.void go() {Object o = new Object();synchronized(o) { /* code here */ }
Given:
What can be a result?()
A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes and prints "StartedComplete".
D.The code executes and prints "StartedComplete0123".
E.The code executes and prints "Started0123Complete".
最新试题
Given:Which two code fragments, inserted independently at line 13, will compile?()
Given:What is the result?()
Given:What is the result?()
Given:What is the result?()
Given:What is the appropriate definition of the hashCode method in class Person?()
Given:What is the result?()
Given a method that must ensure that its parameter is not null:What, inserted at line 12, is the appropriate way to handle a null value?()
Given:When the doSomething method is called, after which line does the Object created in line 5 become available for garbage collection?()
Given:Which command-line invocations will compile?()
Click the Exhibit button.Which statement is true about the set variable on line 12?()