A.编译出错
B.编译通过,但运行出错
C.可以运行,但有错误
D.以上都不对
[判断题]有下面程序段: Public class ArrayTest { Public static void main(String args[]) { int[] intArray=new int[3]; for(int I=0;I<3;I++) { intArray[I]=I+2; System.out.println("IntArray["+I+"]"="+intArray[I]); } System.out.println("--------------"); Int arrLe
[单选题]下面程序段的输出结果为 public class MyClass { public static void main(String args[]) { String s="Helto! How are you?"; System.out.println(s.lastlndexOf("o",16)); } }A.16B.oC.uD.17
[单选题]下面程序段的输出结果是( )。 public class TeSt{ public static voidmain(Stringargs[]){ int[]a=new int[11]; int[]p=new int[4]; intk=5; for(int i=1;i<=10;i++) a[i]=i; for(inti=1;i<=3;i++) p[i]=a[i*i]; for(inti=1;i<=3;i++) k=k+p[i]*2; System.out.println(k); } }A.37B.
[单选题]阅读下面程序 public class ConcatTest { public static void main(String[] args) { String str1="abc"; String str2="ABC": String str3=str1.concat(str2); System.out.println(str3); } } 程序运行的结果是A.abcB.ABCC.abcABCD.ABCabc
[单选题]请阅读下面程序 public class ThreadTest{ public static void main(String args[]) ( Thread t1=new Thread(new Hello()); Thread t2=new Thread(new Hello()); t1.start(); t2.start(); } } class Hello implements Runnable { int i; public void run() { while(true) { Sys
[单选题]请阅读下面程序 public class ThreadTest{ public static void main(String args[]) ( Thread t1=new Thread(new Hello()); Thread t2=new Thread(new Hello()); t1.start(); t2.start(); } } class Hello implements Runnable { int i; public void run() { while(true) { Sys
[单选题]阅读下面程序 public class Test2______ { public static void main(String[] args){ Thread t=new Test2(); t. start(); } public void run(){ System. out. priatln("How are you. "); } } 在程序下画线处填入的正确的选项是A.implements ThreadB.extends RunnableC.implements RunnableD.
[单选题]阅读下面程序 public class Test2______ { public static void main(String[] args){ Thread t=new Test2(); t. start(); } public void run(){ System. out. priatln("How are you. "); } } 在程序下画线处填入的正确的选项是A.implements ThreadB.extends RunnableC.implements RunnableD.
[单选题]阅读下面的程序段: public class Sun { public static void main(String args[ ]) { int a=0 for(int i=1;i<=3;i++) { for(int j=1;j<-i;j++) { for(int k=j;k<=3;k++) { a=a+1; } } } System.out.println(A) 我; }}执行上面的3重循环后,a的值为( )。A.3B.9C.14D.21
[单选题]阅读下面的程序段: publiC class Sun { public static void main (String args[ ]) { int a=0; for(int i=1;i<=3;i++) { for(int j=1;j<=i;j++) { for(int k=j;k<=3;k++) { a=a+1; } } } System.out.println(A) ; } } 执行上面的3重循环后,a的值为( )。A.3B.9C.14D.21