构成方法publicURL(Strings)中的参数s应表示为()A、一个网络协议B、一个文件C、包含网络协议、计算机域名的字符串D、操作系统名称
构成方法publicURL(Strings)中的参数s应表示为()
- A、一个网络协议
- B、一个文件
- C、包含网络协议、计算机域名的字符串
- D、操作系统名称
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下面哪段语法执行正确() A.Strings=Gonewiththewind;Stringt=good;Stringk=s+t;B.Strings=Gonewiththewind;Stringt;t=s[3]+one;C.Strings=Gonewiththewind;Stringstandard=s.toUpperCase();D.Strings=homedirectory;Stringt=s-directory;
Giventhatcisareferencetoavalidjava.io.Consoleobject,whichtwocodefragmentsreadalineoftextfromtheconsole?() A.Strings=c.readLine();B.char[]c=c.readLine();C.Strings=c.readConsole();D.char[]c=c.readConsole();E.Strings=c.readLine(%s,name);F.char[]c=c.readLine(%s,name);
classMineral{staticStringshiny(){return1;}}classGraniteextendsMineral{publicstaticvoidmain(String[]args){Strings=shiny()+getShiny();s=s+super.shiny();System.out.println(s);}staticStringgetShiny(){returnshiny();}}结果为:()A.3B.12C.111D.编译失败
importjava.util.*;publicclassLetterASort{publicstaticvoidmain(String[]args){ArrayListstrings=newArrayList();strings.add(?aAaA”);strings.add(”AaA”);strings.add(?aAa”);strings.add(”AAaa”);Collections.sort(strings);for(Strings:strings){System.out.print(s+);}}}Whatistheresult?()A.Compilationfails.B.aAaAaAaAAaaAaAC.AAaaAaAaAaaAaAD.AaAAAaaaAaAaAaE.aAaAaAaAaAAAaaF.Anexceptionisthrownatruntime.
publicclassX{publicstaticvoidmain(String[]args){strings=newstring(Hello”);modify(s);System.out.printIn(s);}publicstaticvoidmodify(Strings){s+=world!”;}}Whatistheresult?() A.Theprogramrunsandprints“Hello”B.Anerrorcausescompilationtofail.C.Theprogramrunsandprints“Helloworld!”D.Theprogramrunsbutabortswithanexception.
publicclassX{publicstaticvoidmain(Stringargs){strings=newstring(Hello”);modify(s);System.out.printIn(s);}publicstaticvoidmodify(Strings){s+=world!”;}}Whatistheresult?() A.Theprogramrunsandprints“Hello”B.Anerrorcausescompilationtofail.C.Theprogramrunsandprints“Helloworld!”D.Theprogramrunsbutabortswithanexception.
下列代码的执行结果是()。publicclasstest5{publicstaticvoidmain(Stringargs[]){Strings1=newString("hello");Strings2=newString("hello");System.out.prim(s1==s2);System.out.print(",");System.out.println(s1.equals(s2));}A.true,falseB.true,trueC.false,trueD.false,false
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已知有定义:Strings="story",下面()表达式是合法的。A.s+="books";B.charC=s[1];C.intlen=s.length;D.Strings=s.toLowerCase();
下面这段代码会产生( )个String对象。Strings1="hello";Strings2=s1.substring(2,3);Strings3=s1.toString();Strings4=newStringBuffer(s1).toString();A、1B、2C、3D、4
import java.util.*; public class LetterASort { public static void main(String[] args) { ArrayList strings = new ArrayList(); strings.add(‟aAaA”); strings.add(”AaA”); strings.add(‟aAa”); strings.add(”AAaa”); Collections.sort(strings); for (String s: strings) { System.out.print(s + “ “); } } } What is the result?() A、 Compilation fails.B、 aAaA aAa AAaa AaAC、 AAaa AaA aAa aAaAD、 AaA AAaa aAaA aAaE、 aAa AaA aAaA AAaaF、 An exception is thrown at runtime.
Strings="This is the";Stringt=s.concat("String.");t的内容是()A、This is the StringB、This is theC、String
设Strings="story";下列选项中的语句书写正确的是()。A、s+="books";B、char c = s[1];C、int len = s.length;D、s = s-"books";
public static void main方法的参数描述正确的有()。A、String args[]B、String[] argsC、Strings args[]zD、String argsE、Strings arg[]
如果需要把s="It,is,me"按照","分解,并赋给新的变量s1,下列语句正确的是()A、Strings1=newStringTokenizer(s);B、Strings1=newStringTokenizer(s,",");C、StringTokenizers1=newStringTokenizer("It,is,me");D、StringTokenizers1=newStringTokenizer(s,",");
AJAX中,有关于XMLHttpRequest对象中的open方法参数描述错误的是:()A、open方法中第一个参数提交方法可以是post或getB、open方法中第二个参数表示请求的URLC、open方法中第三个参数为true是表示同步D、open方法中第三个参数为true是表示异步
单选题用于文本*区中设置文本同时清除文本*区中原有文本的方法是()AsetText(Strings)BgetText()CTextArea(Strings)DTextArea(intx,inty)
单选题import java.util.*; public class LetterASort { public static void main(String[] args) { ArrayList strings = new ArrayList(); strings.add(‟aAaA”); strings.add(”AaA”); strings.add(‟aAa”); strings.add(”AAaa”); Collections.sort(strings); for (String s: strings) { System.out.print(s + “ “); } } } What is the result?()A Compilation fails.B aAaA aAa AAaa AaAC AAaa AaA aAa aAaAD AaA AAaa aAaA aAaE aAa AaA aAaA AAaaF An exception is thrown at runtime.
单选题有如下程序段:inta=b=5;Strings1="祝你今天考出好成绩!";Strings2=s1;则表达式a==b与s2==s1的结果分别是:()。Atrue与trueBfalse与trueCtrue与falseDfalse与false
单选题设Strings="story";下列选项中的语句书写正确的是()。As+=books;Bchar c = s[1];Cint len = s.length;Ds = s-books;