阅读下面的程序 class Example{ public static void main(String[] args) throws Exception{ int x = 0; try{ x = div(5,2); }catch(Exception e){ System.out.println(e); } System.out.println(x); } public static int div(int a,int b){ return a / b ; } } 程序的输出结果是()
A、2.5
B、2
C、2.0
D、编译失败
第1题
A.t.sleep
B.t.yield
C.t.interrupt
D.t.start
第2题
A.t.sleep()
B.t.yield()
C.t.interrupt()
D.t.start()
第3题
A.t.sleep()
B.t.yield()
C.t.interrupt()
D.t.start()
第4题
A.Compilationfails.
B.Anexceptionisthrownatruntime.
C.Thecodeexecutesandprints“StartedComplete”.
D.Thecodeexecutesandprints“StartedComplete0123”.
E.Thecodeexecutesandprints“Started0l23Complete”.
第5题
A.Importjava.io.*;
B.Includejava.io.*;
C.Importjava.io.PrintWriter;
D.Includejava.io.PrintWriter;
E.Nostatementisneeded.
第6题
A.Nostatementisrequired.
B.importjave.io.*;
C.includejava.io.*;
D.importjave.io.PrintWriter;
E.includejava.io.PrintWriter;
第7题
//insertcodepublicclassfoo(publicstaticvoidmain(String[]args)throwsExceptionprintWriterout=newPrintWriter(new java.io.outputStreamWriter(System.out),true);out.printIn(“Hello”);要使程序能正确运行,在//insertcode处必须添加()语句。
A.importjava.io.PrintWriter;
B.includejava.io.PrintWriter;
C.importjava.io.OutputStreamWriter;
D.includejava.io.OutputStreamWriter;
第8题
public class ThreadTest {
public static void main ( String args[ ]) throws Exception {
int i=0;
Hello t = new Hello ();
___________;
whlle ( true ){
System.out.println ( "Good Morning"+i++ ) ;
if ( i=2 && t.isAlive ()){
System.out.println ( "Main waiting for Hello ! ” );
tjoin () ; // 等待 t 运行结束
}
if ( i==5 ) break :}
}
}
class Hello extends Thread {
int i ;
public void run ()笼
while ( true ){
System.out.println ( "Hello"+i++ ) ;
if ( i=5 ) break ;}}}
为使该程序正确执行,下划线处的语句应是
A ) t.sleep ()
B ) t.yieldn ()
C ) t.interrupt ()
D ) t.start ()
第9题
A.Compilationfails.
B.Anexceptionisthrownatruntime.
C.Thecodeexecutesnormallyandprints“sleep”.
D.Thecodeexecutesnormally,butnothingisprinted.
第10题
A.finally
B.exceptionfinished
C.finallyexceptionfinished
D.Compilationfails.
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