当前分类: SCJP程序员认证考试
问题:单选题Whichensp;canensp;beensp;usedensp;toensp;encodeensp;charSensp;forensp;output?()A Java.io.OutputStream.B Java.io.OutputStreamWriter.C Java.io.EncodeOutputStream.D Java.io.EncodeWriter.E Java.io.BufferedOutputStream....
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问题:多选题class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass extends BaseClass { private float x = 2.0f; //insert code here } Which two are valid examples of method overriding?()AVoid setVar(float f) {x =...
问题:Which of these are keywords in Java?() ...
问题:单选题Which statements, when inserted at the indicated position in the following code, will cause a runtime exception when attempting to run the program?() class A {} class B extends A {} class C extends A {} public class Q3ae4 { public static void...
问题:Which two are true?()...
问题:int i = 0; while (true) { if(i==4) { break; } ++i; } S...
问题:Which statement is true?()...
问题:单选题Which gets the name of the parent directory file “file.txt”?()A String name= File.getParentName(“file.txt”);B String name= (new File(“file.txt”)).getParent();C String name = (new File(“file.txt”)).getParentName();D String name= (new File(“file.txt”...
问题:What will be written to the standard output when the followi...
问题:public class X { public static void main(String [] args) { ...
问题:单选题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 ...
问题:单选题1. public class ForBar { 2. public static void main(String []args) { 3. int i = 0, j = 5; 4. tp: for (;;) { 5. i ++; 6. for(;;) 7. if(i --j) break tp; 8. } 9. system.out.printIn(“i = ” + i + “, j = “+ j); 10. } 11. } What is the resu...
问题:单选题int x= 10; do { x--; } while(x 10); How many times will line 37 be executed?()A ten timesB zero timesC one to me timesD more than ten times...
问题:Which two code fragments correctly create and initialize a s...
问题:public class Plant { private String name; public Plant(Str...
问题:public class X { public object m () { object o = new flo...
问题:多选题11. public interface Status { 12. /* insert code here */ int MY_VALUE = 10; 13. } Which three are valid on line 12?()AfinalBstaticCnativeDpublicEprivateFabstractGprotected...
问题:public class X implements Runnable( private int x; priv...
问题:多选题10. class MakeFile { 11. public static void main(String[] args) { 12. try { 13. File directory = new File(”d”); 14. File file = new File(directory,”f”); 15. if(!file.exists()) { 16. file.createNewFile(); 17. } 18. } catch (IOException e) { 19....
问题:填空题3. string foo = “ABCDE”; 4. foo.substring(3); 5. foo.concat(“XYZ”); 6. Type the value of foo at line 6.()...