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<html><head><title>Java期末考试题</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><link rel="stylesheet" href="css/text.css" type="text/css"><script language="JavaScript"><!--function MM_openBrWindow(theURL,winName,features) { //v2.0 window.open(theURL,winName,features);}//--></script></head><script language="JavaScript">function getresultcheck(form){var mykeys=new Array();// mykeys[0]="B";mykeys[0]="D";mykeys[1]="D";mykeys[2]="C";mykeys[3]="D";mykeys[4]="D";mykeys[5]="C";mykeys[6]="B";mykeys[7]="D";mykeys[8]="C";mykeys[9]="A";mykeys[10]="B";//czp-select-answervar answer=new Array();for(var I=0;I<mykeys.length;I++) answer[I]="";var every=form.elements;<!--czp-select-count-->for(var I=0;I<every.length;I++){ if(every[I].type=="radio") { if(every[I].checked) { var item=parseInt(every[I].name.substr(0)); answer[item-1]+=every[I].value; } } }var newcount="<html><head><title>谢谢您!</title></head><body><center><h2><font color=red>您的测试结果</font></h2></center>";var totalscore=0;var totalcount=0;for(var I=0;I<answer.length;I++){ if(answer[I]==mykeys[I]) { var rstr="<font size=2>第"+(I+1)+"题答案正确!</font><br>"; totalcount++; newcount+=rstr;// if (totalcount==(answer.length)) // {totalscore=100; //}// else// {// totalscore+=1/(answer.length)*100;//每题分数// }*/ }else { var rstr="<font size=2>第"+(I+1)+"题答案错误!正确答案为"+mykeys[I]+"</font><br>"; newcount+=rstr; } totalscore=(totalcount/answer.length)*100.0;}newcount+="<br>您的总成绩为:";newcount+=Math.ceil(totalscore);newcount+="分";newwin=window.open("","","height=200,width=300,scrollbars=yes,resizable=no");newwin.document.write(newcount);}function getresultcheck1(form){var mykeys=new Array();// mykeys[0]="B";mykeys[0]="ACD";mykeys[1]="AB";mykeys[2]="AD";mykeys[3]="CD";mykeys[4]="AD";mykeys[5]="AC";mykeys[6]="AD";mykeys[7]="BC";mykeys[8]="BD";mykeys[9]="BCD";mykeys[10]="BD";mykeys[11]="ABD";mykeys[12]="BD";mykeys[13]="ABD";//czp-mulselect-answervar answer=new Array();for(var I=0;I<mykeys.length;I++) answer[I]="";var every=form.elements;<!--czp-mulselect-count-->for(var I=0;I<every.length;I++){ if(every[I].type=="checkbox") { if(every[I].checked) { var item=parseInt(every[I].name.substr(0)); answer[item-1]+=every[I].value; } } }var newcount="<html><head><title>谢谢您!</title></head><body><center><h2><font color=red>您的测试结果</font></h2></center>";var totalscore=0;for(var I=0;I<answer.length;I++){ if(answer[I]==mykeys[I]) { var rstr="<font size=2>第"+(I+1)+"题答案正确!</font><br>"; newcount+=rstr; totalscore+=1/(answer.length)*100;//每题分数 }else { var rstr="<font size=2>第"+(I+1)+"题答案错误!正确答案为"+mykeys[I]+"</font><br>"; newcount+=rstr; }}newcount+="<br>您的总成绩为:";newcount+=Math.ceil(totalscore);newcount+="分";newwin=window.open("","","height=200,width=300,scrollbars=yes,resizable=no");newwin.document.write(newcount);}function check(){var mykeys=new Array();mykeys[0]="Collection";mykeys[1]="List";mykeys[2]="Map";mykeys[3]="Set";mykeys[4]="7";mykeys[5]="因为在A的main方法中,还没有A的实例就要试图生成内部类的实例";//czp-tiankong-answer//mykeys[0]="B";var answer=new Array();for(var I=0;I<mykeys.length;I++) answer[I]="";var every=zfl.elements;for(var I=0;I<every.length;I++){if(every[I].type=="text"){ if(every[I].value!==null) { //var item=parseInt(every[I].name.substr(1))// answer[item-1]+=every[I].value; answer[I]+=every[I].value; } }}var newcount="<html><head><title>谢谢您!</title></head><body><center><h2><font face=\"隶书\" size=\"5\" color=\"#000099\">您的测试结果</font></h2></center>";var totalscore=0;for(var i=0;i<answer.length;i++){ if(answer[i]==mykeys[i]) { var rstr="<font face=\"宋体\" size=2>第"+(i+1)+"个空答案正确!</font><br>"; newcount+=rstr; totalscore+=1/(answer.length)*100; }else { var rstr="<font face=\"宋体\" size=2>第"+(i+1)+"个空答案错误!正确答案为"+mykeys[i]+"</font><br>"; newcount+=rstr; }}newcount+="<br><font face=\"宋体\" size=3><b>您的总成绩为:</b></font><font face=\"宋体\" size=3 color=red>";newcount+=Math.ceil(totalscore);newcount+="分</font><br>";newwin=window.open("","","height=400,width=400,scrollbars=yes,resizable=no");newwin.document.write(newcount);}</script><body bgcolor="#FFFFFF" text="#000000" topmargin=0><center> <br> <b>Java试题（二）</b><br> <br> <table width="95%" border="0" cellspacing="0" cellpadding="0"> <tr> <td class=text valign="top"> <form> <p><b>一、 选择</b><br> <br> 1.MAX_LENGTH是int型public成员变量, 变量值保持为常量100，用简短语句定义这个变量。 <p><input type="radio" name="1" value="A"> A public int MAX_LENGTH=100;<p><input type="radio" name="1" value="B"> B final int MAX_LENGTH=100;<p><input type="radio" name="1" value="C"> C final public int MAX_LENGTH=100; <p> <input type="radio" name="1" value="D"> D public final int MAX_LENGTH=100. <br> <br> 2.给出下面代码：<br> 1) class Parent { <br> 2) private String name; <br> 3) public Parent(){} <br> 4) } <br> 5) public class Child extends Parent { <br> 6) private String department; <br> 7) public Child() {} <br> 8) public String getValue(){ return name; } <br> 9) public static void main(String arg[]) { <br> 10) Parent p = new Parent(); <br> 11) } <br> 12) } <br> 那些行将引起错误？ <br> <input type="radio" name="2" value="A"> A 第3行 <p><input type="radio" name="2" value="B"> B 第6行<p><input type="radio" name="2" value="C"> C 第7行 <p> <input type="radio" name="2" value="D"> D 第8行<br> <br> 3.类Teacher和Student是类Person的子类； <br> Person p; <br> Teacher t; <br> Student s; <br> //p, t and s are all non-null. <br> if(t instanceof Person) { s = (Student)t; } <br> 最后一句语句的结果是： <p><input type="radio" name="3" value="A"> A 将构造一个Student对象；<p><input type="radio" name="3" value="B"> B 表达式是合法的；<p><input type="radio" name="3" value="C"> C 表达式是错误的； <p> <input type="radio" name="3" value="D"> D 编译时正确，但运行时错误。 <br> <br> 4.给出下面代码段 <br> 1) public class Test { <br> 2) int m, n; <br> 3) public Test() {} <br> 4) public Test(int a) { m=a; } <br> 5) public static void main(String arg[]) { <br> 6) Test t1,t2; <br> 7) int j,k; <br> 8) j=0; k=0; <br> 9) t1=new Test(); <br> 10) t2=new Test(j,k); <br> 11) } <br> 12) }<br> 哪行将引起一个编译时错误？ <p><input type="radio" name="4" value="A"> A line 3<p><input type="radio" name="4" value="B"> B line 5<p><input type="radio" name="4" value="C"> C line 6 <p> <input type="radio" name="4" value="D"> D line 10 <br> <br> 5.对于下列代码： <br> 1) class Person { <br> 2) public void printValue(int i, int j) {//... } <br> 3) public void printValue(int i){//... }<br> 4) } <br> 5) public class Teacher extends Person { <br> 6) public void printValue() {//... } <br> 7) public void printValue(int i) {//...} <br> 8) public static void main(String args[]){ <br> 9) Person t = new Teacher(); <br> 10) t.printValue(10); <br> 11) } <br> 第10行语句将调用哪行语句？? <p><input type="radio" name="5" value="A"> A line 2<p><input type="radio" name="5" value="B"> B line 3<p><input type="radio" name="5" value="C"> C line 6<p><input type="radio" name="5" value="D"> D line 7<br> <br> 6.哪个关键字可以抛出异常？ <p><input type="radio" name="6" value="A"> A transient<p><input type="radio" name="6" value="B"> B finally<p><input type="radio" name="6" value="C"> C throw<p><input type="radio" name="6" value="D"> D static<br> <br> 7.Main()方法的返回类型是： <p><input type="radio" name="7" value="A"> A int<p><input type="radio" name="7" value="B"> B void<p><input type="radio" name="7" value="C"> C boolean<p><input type="radio" name="7" value="D"> D static <br> <br> 8.System类在哪个包中? <p> <input type="radio" name="8" value="A"> A java.util <p> <input type="radio" name="8" value="B"> B java.io <p> <input type="radio" name="8" value="C"> C java.awt <p> <input type="radio" name="8" value="D"> D java.lang<br> <br> 9.对于下列代码： <br> public class Parent { <br> public int addValue( int a, int b) { <br> int s; <br> s = a+b; <br> return s; <br> } <br>⌨️ 快捷键说明
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