public class OuterClass { private double d1 1.0; //insert code here } You need to insert an inner class declaration at line2. Which two inner class declarations are valid?()
class Sock { String size; String color; public boolean equals(Object o) { Sock s = (Sock) o; return color.equals(s.color); } // insert code here } 哪两个满足 hashCode 的约定?()
public class Ball { public enum Color { RED, GREEN, BLUE }; public void foo() { // insert code here { System.out.println(c); } } } Which code inserted at line 14 causes the foo method to print RED, GREEN, and BLUE?()
1. public class OuterClass { 2. private double d1 = 1.0; 3. // insert code here 4. } Which two are valid if inserted at line 3?()
Given: 10.public void service(ServletRequest request, 11.ServletResponse response) { 12.ServletInputStream sis = 13.// insert code here 14.} Which retrieves the binary input stream on line 13?()
Given the following class, which statements can be inserted at position 1 without causing the code to fail compilation?() public class Q6db8 { int a; int b = 0; static int c; public void m() { int d; int e = 0; // Position 1 } }
10. public class Bar { 11.static void foo(int...x) { 12. // insert code here 13. } 14. } Which two code fragments, inserted independently at line 12, will allow the class to compile?()
Given 11.public interface Status { 12./* insert code here */ int MY_VALUE = 10; 13.} Which three are valid on line 12?()
现有: 1. import java.util.*; 2. 3. Class FindStuff { 4.public static void main (String[]args) { 5, //insert code here 6. c.put ("X", 123); 7. } 8. } 分别插入到第5行,哪三行允许代码编译?()
Which lines of code are valid declarations of a native method when occurring within the declaration of the following class?() public class Qf575 { // insert declaration of a native method here }
1. public class Blip { 2. protected int blipvert(int x) { return 0; } 3. } 4. class Vert extends Blip { 5. // insert code here 6. } Which five methods, inserted independently at line 5, will compile?()
10. class Nav{ 11. public enum Direction { NORTH, SOUTH, EAST, WEST } 12. } 13. public class Sprite{ 14. // insert code here 15. } Which code, inserted at line 14, allows the Sprite class to compile?()
10. class Line { 11. public static class Point { } 12. } 13. 14. class Triangle { 15. // insert code here 16. } Which code, inserted at line 15, creates an instance of the Point class defined in Line?()
public class OuterClass { private double d1 1.0; //insert code here } You need to insert an inner class declaration at line2. Which two inner class declarations are valid?()
interface Altitude { //insert code here } 和4个声明: int HIGH = 7; public int HIGH = 7; abstract int HIGH = 7; interface int HIGH = 7; 分别插入到第2行,有多少行可以编译?()
interface A { public int getValue() } class B implements A { public int getValue() { return 1; } } class C extends B { // insert code here } Which three code fragments, inserted individually at line 15, make use of polymorphism?()
public class TestString3 { public static void main(String[] args) { // insert code here System.out.println(s); } } Which two code fragments, inserted independently at line 3, generate the output 4247?()
现有2 个文件: 1. package x; 2. public class X { 3. public static void doX() { System.out.print("doX "); } 4. } 和: 1. class Find { 2. public static void main(String [] args) { 3. //insert code here 4. } 5. } 哪两行分别插入到类Find 的第3 行将编译并产生输出“doX”? ()
11. public interface Status { 12. /* insert code here */ int MY_VALUE = 10; 13. } Which three are valid on line 12?()
1. class Calc { 2. public static void main(String [] args) { 3. try { 4. int x = Integer.parseInt("42a"); 5. //insert code here 6. System.out.print("oops "); 7. } 8. } 9. } 下面哪两行分别插入到第五行,会导致输出“oops”?()
现有2个文件: package x; public class X{ public static void doX() {System.out.print("doX");} } 和: class Find{ public static void main(String [] args) { //insert code here } } 哪两行分别插入到类Find的第3行将编译并产生输出“doX”?()
1. import java.util.*; 2. public class Test { 3. public static void main(String[] args) { 4. List strings = new ArrayList(); 5. // insert code here 6. } 7. } Which four, inserted at line 5, will allow compilation to succeed?()
1. import java.util.*; 2. 3. Class FindStuff { 4. public static void main(String [] args) { 5. // insert code here 6. c.put("x", 123); 7. } 8. } 分别插入到第5行,哪三行允许代码编译?()
Given a class Repetition:1.package utils;2.3.public class Repetition{4.public static String twice(Strings){returns+s;}5.}and given another class Demo:1.//insert code here2.3.public class Demo{4.public static void main(String[]args){5.System.out.println(twice("pizza"));6.}7.}Which code should be inserted at line 1 of Demo.java to compile and run Demo to printpizzapizza”?()