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1. import java.util.*; 2. public class Test { 3. public static void main(String[] args) { 4. List
- A、 String s = strings.get(0);
- B、 Iterator i1 = strings.iterator();
- C、 String[] array1 = strings.toArray();
- D、 Iterator
i2 = strings.iterator(); - E、 String[] array2 = strings.toArray(new String[1]);
- F、 Iterator
i3 = strings.iterator ();
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更多 “ 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?()A、 String s = strings.get(0);B、 Iterator i1 = strings.iterator();C、 String[] array1 = strings.toArray();D、 Iterator i2 = strings.iterator();E、 String[] array2 = strings.toArray(new String[1]);F、 Iterator i3 = strings.iterator();” 相关考题
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-1B
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127D
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Set set = new TreeSet();B
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for(char o: list)B
for(Object o: getList())C
for(Object o: getList();)D
for(Object o: o.getList())
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只有s1B
只有s3C
只有s1和s3D
只有s1和s4
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多选题现有: 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?()AMap c= new SortedMap();BHashMap c= new HashMap();CHashMap c= new Hashtalole();DSortedMap c= new TreeMap();EArrayList c= new ArrayList();FMaD c = new LinkedHashMap();
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InsideOnew ei= eo.new InsideOn();B
Eo.InsideOne ei = eo.new InsideOne();C
InsideOne ei = EnclosingOne.new InsideOne();D
EnclosingOne.InsideOne ei = eo.new InsideOne();
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单选题1. public class A { 2. void A() { 3. System.out.println(“Class A”); 4. } 5. public static void main(String[] args) { 6. new A(); 7. } 8. } What is the result?()A
Class AB
Compilation fails.C
An exception is thrown at line 2.D
An exception is thrown at line 6.E
The code executes with no output.
考题
单选题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 print“pizzapizza”?()A
import utils.*;B
static import utils.*;C
importutils.Repetition.*;D
static importutils.Repetition.*;E
import utils.Repetition.twice();F
import static utils.Repetition.twice;G
static import utils.Repetition.twice;
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