public class test ( private static int j = 0; private static boolean methodB(int k) ( j += k; return true; ) public static void methodA(int i) { boolean b: b = i
A、 The program prints “0”
B、 The program prints “4”
C、 The program prints “8”
D、 The program prints “12”
E、 The code does not complete.
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public class Test{ public static void main( String[] argv ){ // insert statement here } } Which statement, inserted at line 3, produces the following output?() Exception in thread “main” java.lang.AssertionError: true at Test.main(Test.java:3)
A、 assert true;
B、 assert false;
C、 assert false : true;
D、 assert false == true;
E、 assert false: false;
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Which determines if “prefs” is a directory and exists on the file system?()
A、 Boolean exists=Directory.exists (“prefs”);
B、 Boolean exists=(new File(“prefs”)).isDir();
C、 Boolean exists=(new Directory(“prefs”)).exists();
D、 Boolean exists=(new File(“prefs”)).isDirectory();
E、 Boolean exists=true; Try{ Directory d = new Directory(“prefs”); } catch (FileNotFoundException e) { exists = false; }
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Assuming that the serializeBanana( ) and the deserializeBanana( ) methods will correctly use Java serialization and given: What is the result?()
A、 restore 400
B、 restore 403
C、 restore 453
D、 Compilation fails.
E、 An exception is thrown at runtime.
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25.intx=12; 26. while (x
A、 0
B、 10
C、 12
D、 Line 29 will never be reached.
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在异步通信中,每个字符包含1位起始位、7位数据位、1位奇偶校验位和1位终止位,每秒钟传送100个字符,则有效数据速率为(17)。
A.500b/s
B.600b/s
C.700b/s
D.800b/s