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public class Yippee { public static void main(String [] args) { for(int x = 1; x < args.length; x++) { System.out.print(args[x] +“ “); } } } and two separate command line invocations: java Yippee java Yippee 1234 What is the result?()
- A、 No output is produced. 123
- B、 No output is produced. 234
- C、 No output is produced. 1234
- D、 An exception is thrown at runtime. 123
- E、 An exception is thrown at runtime. 234
- F、 An exception is thrown at rijntime. 1234
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更多 “ public class Yippee { public static void main(String [] args) { for(int x = 1; x args.length; x++) { System.out.print(args[x] +“ “); } } } and two separate command line invocations: java Yippee java Yippee 1234 What is the result?() A、 No output is produced. 123B、 No output is produced. 234C、 No output is produced. 1234D、 An exception is thrown at runtime. 123E、 An exception is thrown at runtime. 234F、 An exception is thrown at rijntime. 1234” 相关考题
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public class Plant { private String name; public Plant(String name) { this.name = name; } public String getName() { return name; } } public class Tree extends Plant { public void growFruit() { } public void dropLeaves() { } } Which is true?() A、 The code will compile without changes.B、 The code will compile if public Tree() { Plant(); } is added to the Tree class.C、 The code will compile if public Plant() { Tree(); } is added to the Plant class.D、 The code will compile if public Plant() { this(”fern”); } is added to the Plant class.E、 The code will compile if public Plant() { Plant(”fern”); } is added to the Plant class.
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What produces a compiler error?() A、 class A { public A(int x) {} }B、 class A {} class B extends A { B() {} }C、 class A { A() {} } class B { public B() {} }D、 class Z { public Z(int) {} } class A extends Z {}
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单选题interface Data { public void load(); } abstract class Info { public abstract void load(); } Which class correctly uses the Data interface and Info class?()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
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多选题Which three demonstrate an “is a” relationship?()Apublic class X { } public class Y extends X { }Bpublic interface Shape { } public interface Rectangle extends Shape{ }Cpublic interface Color { } public class Shape { private Color color; }Dpublic interface Species { } public class Animal { private Species species; }Epublic class Person { } public class Employee { public Employee(Person person) { }Finterface Component { } class Container implements Component { private Component[] children; }
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Compilation of both classes will fail.B
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Compilation of class a will fail. Compilation of class a will succeed.
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多选题Which two demonstrate an “is a” relationship?()Apublic interface Person { } public class Employee extends Person { }Bpublic interface Shape { } public class Employee extends Shape { }Cpublic interface Color { } public class Employee extends Color { }Dpublic class Species { } public class Animal (private Species species;)Einterface Component { } Class Container implements Component ( Private Component[ ]children; )
考题
单选题public class Plant { private String name; public Plant(String name) { this.name = name; } public String getName() { return name; } } public class Tree extends Plant { public void growFruit() { } public void dropLeaves() { } } Which is true?()A
The code will compile without changes.B
The code will compile if public Tree() { Plant(); } is added to the Tree class.C
The code will compile if public Plant() { Tree(); } is added to the Plant class.D
The code will compile if public Plant() { this(”fern”); } is added to the Plant class.E
The code will compile if public Plant() { Plant(”fern”); } is added to the Plant class.
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单选题What produces a compiler error?()A
class A { public A(int x) {} }B
class A {} class B extends A { B() {} }C
class A { A() {} } class B { public B() {} }D
class Z { public Z(int) {} } class A extends Z {}
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