单项选择题X 纠错
A. 1 2 3
B. Compilation fails because of an error in line 12.
C. Compilation fails because of an error in line 13.
D. Compilation fails because of an error in line 14.
E. A ClassCastException is thrown at runtime.
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单项选择题
A. Mr. John Doe
B. An exception is thrown at runtime.
C. Compilation fails because of an error in line 12.
D. Compilation fails because of an error in line 15.
E. Compilation fails because of an error in line 20.
单项选择题
A. for( Color c : Color.values())
B. for( Color c = RED; c <= BLUE; c++)
C. for( Color c; c.hasNext() ; c.next())
D. for( Color c = Color[0]; c <= Color[2]; c++)
E. for( Color c = Color.RED; c <= Color.BLUE; c++)
多项选择题
A. static final int[] a = { 100,200 };
B. static final int[] a; static { a=new int[2]; a[0]=100; a[1]=200; }
C. static final int[] a = new int[2] { 100,200 };
D. static final int[] a; static void init() { a = new int[3]; a[0]=100; a[1]=200; }
多项选择题
A. Line 35 will not compile.
B. Line 36 will not compile.
C. Line 37 will not compile.
D. Line 38 will not compile.
单项选择题
A. Line 57 will print the value 2.
B. Line 57 will print the value 3.
C. Compilation will fail because of an error in line 55.
D. Compilation will fail because of an error in line 56.
单项选择题
A. 5
B. 10
C. 12
D. 17
E. 24
单项选择题
A. 0.0
B. Compilation fails.
C. A ParseException is thrown by the parse method at runtime.
D. A NumberFormatException is thrown by the parse method at runtime.
单项选择题
A. go in Goban go in Sente go in Sente
B. go in Sente go in Sente go in Goban
C. go in Sente go in Goban go in Goban
D. go in Goban go in Goban go in Sente
E. Compilation fails because of an error in line 17.
多项选择题
A. public class Circle implements Shape { private int radius; }
B. public abstract class Circle extends Shape { private int radius; }
C. public class Circle extends Shape { private int radius; public void draw(); }
D. public abstract class Circle implements Shape { private int radius; public void draw(); }
E. public class Circle extends Shape { private int radius;public void draw() {/* code here */} }
F. public abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }
单项选择题
A. public class Employee extends Info implements Data { public void load() { /*do something*/ } }
B. public class Employee implements Info extends Data { public void load() { /*do something*/ } }
C. public class Employee extends Info implements Data { public void load() { /*do something */ } public void Info.load() { /*do something*/ } }
D. public class Employee implements Info extends Data { public void Data.load() { /*dsomething */ } public void load() { /*do something */ } }
E. public class Employee implements Info extends Data { public void load() { /*do something */ } public void Info.load(){ /*do something*/ } }
F. public class Employee extends Info implements Data{ public void Data.load() { /*do something*/ } public void Info.load() { /*do something*/ } }