当前分类: SCJP程序员认证考试
问题:填空题Public class test ( Public static void stringReplace (String text) ( Text = text.replace („j„ , „i„); ) public static void bufferReplace (StringBuffer text) ( text = text.append (“C”) ) public static void main (String args ){ S...
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问题:public class X { public static void main(String [] args) { ...
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:import java.awt*; public class X extends Frame ( public ...
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.()...
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: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:单选题public class test ( public static void main(string args) { int 1= 0; while (i) { if (i==4) { break; } ++i; } } ) What is the value of i at line 10?()A 0B 3C 4D 5E The code will not compile....
问题:public class X implements Runnable( private int x; priv...
问题:多选题import java.awt*; public class X extends Frame ( public static void main(string args) ( X x = new X (); X.pack(); x.setVisible(true); ) public X () ( setlayout (new GridLayout (2,2)); Panel p1 = new panel(); Add(p1); Button b1= new...
问题:单选题11. class Payload { 12. private int weight; 13. public Payload(int wt) { weight = wt; } 13. public void setWeight(mt w) { weight = w; } 15. public String toString { return Integer.toString(weight); } 16. } 17. 18. public class TestPayload { 19....
问题:多选题Which two are equivalent? ()A164B16/2C16*4D162E16/2^2F162...
问题:单选题public class X { public object m () { object o = new float (3.14F); object oa = new object [1]; oa[0]= o; o = null; oa[0] = null; return o; } } When is the float object created in line 3, eligible for garbage collection?()A Just af...
问题:class Super { public int getLenght( ) { return 4; } } pub...
问题:public class Foo { public static void main(String[] args) {...
问题:int i = 0; while (true) { if(i==4) { break; } ++i; } S...
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:Which two CANNOT directly cause a thread to stop executing?(...
问题:Which of these are keywords in Java?() ...