问题:
public class TwoThreads {
private static Object resource = new Object();
private static void delay(long n) {
try { Thread.sleep(n); }
catch (Exception e) { System.out.print(”Error “); }
}
public static void main(String[] args) {
System.out.print(”StartMain “);
new Thread1().start();
delay(1000);
Thread t2 = new Thread2();
t2.start();
delay(1000);
t2.interrupt
delay(1000);
System.out.print(”EndMain “);
}
static class Thread 1 extends Thread {
public void run() {
synchronized (resource) {
System.out.print(”Startl “);
delay(6000);
System.out.print(”End1 “);
}
}
}
static class Thread2 extends Thread {
public void run() {
synchronized (resource) {
System.out.print(”Start2 “);
delay(2000);
System.out.print(”End2 “);
}
}
}
}
Assume that sleep(n) executes in exactly m milliseconds, and all other code executes in an insignificant amount of time. What is the output if the main() method is run?()
A . Compilation fails.
B . Deadlock occurs.
C . StartMain Start1 Error EndMain End1
D . StartMain Start1 EndMain End1 Start2 End2
E . StartMain Start1 Error Start2 EndMain End2 End1
F . StartMain Start1 EndMain End1 Start2 Error End2
public class TwoThreads {
private static Object resource = new Object();
private static void delay(long n) {
try { Thread.sleep(n); }
catch (Exception e) { System.out.print(”Error “); }
}
public static void main(String[] args) {
System.out.print(”StartMain “);
new Thread1().start();
delay(1000);
Thread t2 = new Thread2();
t2.start();
delay(1000);
t2.interrupt
delay(1000);
System.out.print(”EndMain “);
}
static class Thread 1 extends Thread {
public void run() {
synchronized (resource) {
System.out.print(”Startl “);
delay(6000);
System.out.print(”End1 “);
}
}
}
static class Thread2 extends Thread {
public void run() {
synchronized (resource) {
System.out.print(”Start2 “);
delay(2000);
System.out.print(”End2 “);
}
}
}
}
Assume that sleep(n) executes in exactly m milliseconds, and all other code executes in an insignificant amount of time. What is the output if the main() method is run?()
● 参考解析
本题暂无解析