已知example是已定义的类,则在程序结束前,共存在几个对象 () #include “example,h” main() {example x(5); example arr[2]={1,2}; x=10; x.print(); x=example(15); x.print(); }
A.3个
B.5个
C.7个
D.8个
多选题下面哪几个函数是public void example(){...}的重载函数()。Apublic void example(intm){...}Bpublic int example(){...}Cpublic void example2(){...}Dpublic int example(intm,floatF.{...}
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多选题下面选项中是public void example(){...}的重载函数的有()。Apublic void example2(){...}Bpublic int example(){...}Cpublic void example(intm){...}Dpublic int example(intm,floatF.{...}
单选题public class X implements Runnable( private int x; private int y; public static void main(Stringargs) X that = new X(); (new Thread(that)).start(); (new Thread(that)).start(); ) public void run() ( for (;;) ( x++; y++; System.out.printIn(“x=” + x + “, y = ” + y); ) ) What is the result?()AErrors at lines 7 and 8 cause compilation to fail.BThe program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”).CThe program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”).DThe program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears only for once (for example, “x=1, y=1” followed by “x=2, y=2”).
单选题public class X implements Runnable ( private int x; private int y; public static void main(String args) ( X that = new X(); (new Thread(that)) . start( ); (new Thread(that)) . start( ); ) public synchronized void run( ) ( for (;;) ( x++; y++; System.out.printIn(“x = “ + x + “, y = “ + y); ) ) ) What is the result?()AAn error at line 11 causes compilation to fail.BErrors at lines 7 and 8 cause compilation to fail.CThe program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”)DThe program prints pairs of values for x and y that are always the same on the same line (forexample, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”)EThe program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=2s, y=2”)
单选题1. public class X implements Runnable( 2. private int x; 3. private int y; 4. 5. public static void main(String[]args) 6. X that = new X(); 7. (new Thread(that)).start(); 8. (new Thread(that)).start(); 9. ) 10. 11. public void run() ( 12. for (;;) ( 13. x++; 14. y++; 15. System.out.printIn(“x=” + x + “, y = ” + y); 16. ) 17. ) What is the result?()AErrors at lines 7 and 8 cause compilation to fail.BThe program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”).CThe program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”).DThe program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears only for once (for example, “x=1, y=1” followed by “x=2, y=2”).
单选题public class X implements Runnable { private int x; private int y; public static void main(String [] args) { X that = new X(); (new Thread( that )).start(); (new Thread( that )).start(); } public void run() { for (;;) { synchronized (this) { x++; y++; } System.out.println(Thread.currentThread().getName() + “x = “ + x + “, y = “ + y); } } } What is the result?()ACompilation fails.BThe program prints pairs of values for x and y that might not always be the same on the same line (for example, “x = 2, y = 1”).CThe program prints pairs of values for x and y that are always the same on the same line (for example, “x = 1, y = 1”). In addition, each value appears only once (for example, “x = 1, y = 1” followed by “x = 2, y = 2”). The thread name at the start of the line shows that both threads are executing concurrently.DThe program prints pairs of values for x and y that are always the same on the same line (for example, “x = 1, y = 1”). In addition, each value appears only once (for example, “x = 1, y = 1” followed by “x = 2, y = 2”). The thread name at the start of the line shows that only a single thread is actually executing.
单选题public class X implements Runnable ( private int x; private int y; public static void main(String [] args) ( X that = new X(); (new Thread(that)) . start( ); (new Thread(that)) . start( ); ) public synchronized void run( ) ( for (;;) ( x++; y++; System.out.printIn(“x = “ + x + “, y = “ + y); ) ) ) What is the result?()AAn error at line 11 causes compilation to fail.BErrors at lines 7 and 8 cause compilation to fail.CThe program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”)DThe program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”)EThe program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=2s, y=2”)