更多"Import java.applet.Applet;&ens"的相关试题:
[单项选择] int i= 1, j= 10 ; do ( if (i++> --j) continue; ) while (i<5); After execution, what are the values for I and j?()
A. i = 6 and j= 5
B. i = 5 and j= 5
C. i = 6 and j= 4
D. i = 5 and j= 6
E. i = 6 and j= 6
[多项选择] int i = 0, j = 5; tp; for (;;) { i++; for(;;) { if (i> --j) { break tp; break tp; } } System.out.println(“i=” +i “,j =”+j); } What is the result?()
A. i = 1, j = 0
B. i = 1, j = 4
C. i = 3, j = 4
D. i = 3, j = 0
E. Compilation fails.
[单项选择] int i = 0, j = 1; if ((i++ == 1) && (j++ == 2)) { i = 42; } System.out.println(“i = “ + i + “, j = “ + j); What is the result?()
A. i = 1, j = 2
B. i = 1, j = 1
C. i = 42, j = 2
D. i = 42, j = 1
E. Compilation fails.
[单项选择] int i= 1, j= 10 ; do ( if (i++> --j) continue; ) while (i<5); After execution, what are the values for I and j? ()
A. i = 6 and j= 5
B. i = 5 and j= 5
C. i = 6 and j= 4
D. i = 5 and j= 6
E. i = 6 and j= 6
[多项选择] 1. int I=1, j=0 2. 3. switch(i) { 4. case 2: 5. j+=6; 6. 7. case 4: 8. j+=1; 9. 10. default: 11. j +=2; 12. 13. case 0: 14. j +=4; 15. } 16. What is the value of j at line 16?()
A. 0
B. 1
C. 2
D. 4
E. 6
[单项选择] 现有: package mypack; import javax.swing.JButton; import javax.swing.JFrame; public class Butt extends JFrame { public static v.id main(string[] args) { // TODO Auto-generated method stub Butt butt=new Butt(); } Butt(){ JButton jbl=new JButton("Hello"); JButton jb2=new JButton("World"); add(jbl); add(jb2); setSize(300,300); setVisible(true); } } 下列关于代码运行效果的叙述正确的是哪项? ()
A. 2个按钮紧靠着排列,Hello在World的左侧
B. Hello占据Frame的整个区域
C. World占据Frame的整个区域
D. 2个按钮都在Frame的顶部
[多项选择] int I=1, j=0 switch(i) { case 2: j+=6; case 4: j+=1; default: j +=2; case 0: j +=4; } What is the value of j at line 16?()
A. 0
B. 1
C. 2
D. 4
E. 6
[单项选择] int i = 1,j = 10; do { if(i>j) { break; } j--; } while (++i <5); System.out.println(“i =” +i+” and j = “+j); What is the result?()
A. i = 6 and j = 5
B. i = 5 and j = 5
C. i = 6 and j = 4
D. i = 5 and j = 6
E. i = 6 and j = 6
[单项选择] int i = 1,j = -1; switch (i) { case 0, 1:j = 1; case 2: j = 2; default; j = 0; } System.out.println(“j=”+j); What is the result?()
A. j = -1
B. j = 0
C. j = 1
D. j = 2
E. Compilation fails.
[多项选择]
下列解释正确的是()
A. out_applet.java中一定有一个参数是“display_string”
B.
具有两个属性“name”和“value”
C. value是参数的名称
D. “good morning”通过
标记传递给“Our_Applet.class”
[单项选择] 在j2ee中,有如下代码在servlet1.java中 Important javax.servelt.*; Important javax.servlet.http.* Import java.io.ioexception Import java.io.printwriter Public class servlet1 extends httpservlet{ Public void init() throws serveltexception{ } Public void service(httpservelt request request,httpserbletresponse response)throws servletexception,ioexception{ Printwriter out=response.getwriter(); Out.println(“hello”); } } 假如编译serblet 要具备的环境都已经建立好,现在用完全正确的命令编译该文件,对于以下陈述正确的是()
A. 编译该文件时会提示缺少doget()或者dopost()方法,编译不能够成功通过
B. 编译后,把servlet1.class放在正确位置,在浏览器中查看该servlet1,会看到输出文字:“hello”
C. 编译后,把servlet1.class放在正确位置,在浏览器中查看该servlet1,却看不到任何输出的文字
D. 编译后,把servlet1.class放在正确位置,在浏览器中查看该servlet1,却看到产生运行时错误的出差信息
[简答题] 一般程序如下: ORG 2000H ARY DW --4,3,--2,1 CNT DW $--ARY VAR DW ARY,$+4 ┆ MOV AX,ARY MOV BX,OFFSET VAR MOV CX,CNT MOV DX,VAR+2 LEA SI,ARY ┆ 此程序段执行后,寄存器AX,BX,CX,DX与SI中的内容各是多少?
[单项选择] 现有: 1 Interface F{} 2 class A implements F{} 3 class B extends A{} 4 class C extends B{ 5 public static void main(String[] args){ 6 B b=new B(); 7 //inSert C0de here 8 } 9 } 下列哪行代码插入到第7行,将抛出java.lang.ClassCaseException异常()
A. A a=b;
B. F f= (C)b;
C. F f= (A)b;
D. B bb= (B)(A)b;
[单项选择] 现有: class Pencil { public void write (String content){ System.out.println ("Write"+content); } } class RubberPencil extends Pencil{ public void erase (String content){ System.out.println ("Erase"+content); } } 执行下列代码的结果是哪项?() Pencil pen=new RubberPencil(); pen.write ("Hello"); pen.erase ("Hello");
A. Write Hello Erase Hello
B. Erase Hello Write Hello
C. 编译错误
D. 运行时抛出异常
[多项选择] public class Foo { private int val; public foo(int v) (val = v;) } public static void main (String args) { Foo a = new Foo (10); Foo b = new Foo (10); Foo c = a; int d = 10; double e = 10.0; } Which three logical expression evaluate to true? ()
A. (a ==c)
B. (d ==e)
C. (b ==d)
D. (a ==b)
E. (b ==c)
F. (d ==10.0)
[单项选择] public class Pet{ private String name; public Pet(){ System.out.print(1); } public Pet(String name){ System.out.print(2); } } public class Dog extends Pet{ public Dog(){ System.out.print(4); } public Dog(String name){ this(); System.out.print(3); } } 执行new Dog(“棕熊”);后程序输出是哪项?()
A. 143
B. 423
C. 243
D. 1134