9、请阅读下面的代码 String s1=new String(“abc”); String s2=s1.intern(); String s3=”abc”; System.out.println(s1==s2); System.out.println(s2==s3); System.out.println(s1==s3); 下列选项中,程序的输出结果为()A.false true falseB.false false falseC.false true trueD.false false true

9、请阅读下面的代码 String s1=new String(“abc”); String s2=s1.intern(); String s3=”abc”; System.out.println(s1==s2); System.out.println(s2==s3); System.out.println(s1==s3); 下列选项中,程序的输出结果为()

A.false true false

B.false false false

C.false true true

D.false false true


参考答案和解析
A

相关考题:

下列程序段:chars1[10]=”12345”,s2[10]=”abc”,s3[]=”67”;strcpy(s1,s2);strcat(s1,s3);puts(s1);的运行结果是() A、abc67B、abc4567C、abc567D、abc567

( 17 )阅读下面程序public class OperatorsAndExpressions {void equalsMethod1(){String s1=new String("how are you");String s2=new String("how are you");System.out.println(s1==s2);}public static void main(String args[]){OperatorsAndExpressions perAndExp=new OperatorsAndExpressions();// 用于复合类型数据的 “ == ” 运算符OperAndExp. equalsMethod1();}}程序运行结果是A ) ==B ) trueC ) falseD ) equal

在执行下面这段Java程序时: public class Test { public static void main (String[] args) { String s1=args[0]; String s2=args[1]; String s3=args[2]; } }若编译程序后键入命令: java Test one two three,那么变量s1所引用的字符串为( )。A.nullB.testC.oneD.java

下面的程序执行后,屏幕上显示的应是 public class Exam{ public static void main(String[]args){ char char1[]={'t','e','s','t'}; char char2[]={'t','e','S','t','1'}; String s1=new String(char1); String s2=new String(char2,0,4); System.out.println(s1.equals(s2)); } }A.trueB.falseC.testD.编译错误

分析两个字符串,分别输出每个字符串的单词并统计出单词个数。阅读程序,填写空行。注意:不改动程序结构,不得增行或删行。import java.util.*;public class ex2{public static void main(String args[]){String s1="I am Chinese,she is my girlfriend";String s2="Oh,really,fine";StringTokenizer fenxi_1=new StringTokenizer(s1,",");StringTokenizer fenxi_2=new StringTokenizer(s2,",");int n1=fenxi_1.countTokens();int n2=fenxi_2.countTokens();while(fenxi_1.hasMoreTokens()){String s=fenxi_1.nextToken();System.out.println(s);}System.out.println("s1单词:"+n1+"个");while(fenxi_1.hasMoreTokens()){String s=______;System.out.println(s);}System.out.println("s2单词:"+n2+"个");}}

下列语句输出结果为( )。 public class test\ { public static void main (String args[]) { String s1=new String("How"); String s2=new String("How"); System.out.println(!(s1.equals(s2))); } }A.falseB.trueC.0D.1

对于下面的程序includeincludechar *scmp(char*s1,char*s2){if(strcmp(s1, 对于下面的程序 #include<stdio.h> #include<string.h> char *scmp(char*s1,char*s2) { if(strcmp(s1,s2)<0)return(s1); else return(s2); } main() { int i:char string[20],sb[3][20]; for(i=0;i<3;i++)gets(str[i]); strcpy(string,scmp(str[0],str[1])); strcpy(string,scmp(string,str[21)); printf("%s\n",string); } 若运行时依次输入abcd、abba和abc三个字符串,则输出结果为______。A.abcdB.abbaC.abcD.abca

关于以下程序段,正确的说法是( )。(1) String s1="abc"+"def";(2) String s2=new String (s1);(3) if (s1.equals (s2))(4) System.out.println("==succeded");(5) if(s1==s2)(6) System.out.println(".equals( )succeded");A.行(4)与行(6)都将执行B.行(4)执行,行(6)不执行C.行(6)执行,行(4)不执行D.行(4)、行(6)都不执行

下列程序段: String s1=new String("How"); String s2=new String("How"); System.out.println(!(s1==s2)); 的结果为A.falseB.trueC.1D.0

下列程序的执行结果是______。 public class Test9 { public static void main(String[] args) { String s1 = new String("I am a girl"); String s2 = new String("I am a girl"); System.out.println (s1.equal (s2)); } }A.trueB.假C.I amgirlD.都不正确

对于下面的程序includeincludechar * scmp(char * s1,char * s2){if(strcm 对于下面的程序 #include<stdio.h> #include<string.h> char * scmp(char * s1,char * s2) { if(strcmp(s1,s2)<0)return(s1); else return(s2); } main() { int i;char string[20],str[3][20]; for(i=0;i<3;i++)gets(str[i]); strcpy(string,scmp(str[0],str[1])); strcpy(string,scmp(string,str[2])); printf("%s\n",string); } 若运行时依次输入abcd、abba和abc三个字符串,则输出结果为 ______。A.abcdB.abbaC.abcD.abca

阅读下面程序 public class OperatorsAndExpressions{ void equalsMethodl(){ String s1=new String("how are you"); String s2=new String("how are you"); System.out.println(s1==s2); } public static void main(String args[]){ OperatorsAndExpressionsOperAndExp=new OperatorsAndExpressions(); //用于复合类型数据的“==”运算符 OperAndExp.equalsMethod1(); } } 程序运行结果是A.=B.trueC.falseD.equal

阅读下面程序 public class OperatorsAndExpressions { void equalsMethodl() { String s1=new String("how are you"); String s2=new String("how are you"); System.out.println(s1==s2); } public static void main(String args[]) { OperatorsAndExpressions perAndExp=new OperatorsAndExpressions(); //用于复合类型数据的“==”运算符 OperAndExp.equalsMethodl(); } } 程序运行的结果是A. ==B.trueC.falseD.equal

下面程序代码运行结果为( )。 import java.awt.*; public class Test { public static void main (String args[]) { String s1="a+b+c"; String s2="+"; int i=s1.lastIndexOf (s2); System.out.println(i); } }A.0B.1C.2D.3

下列代码的执行结果是( )。 public class Test{ public static void main String args[]){ String s1=new String("welcome"); String s2=new String("welcome"); System.out.println(s1==s2); System.out.println(s1.equals(s2)); } }A.false,falseB.false,trueC.true,trueD.true,false

下面的程序执行后,屏幕上应显示______。 public class Test{ public static void main(String[ ]args){ char char1[ ]={'t','e','s','t'}; char char2[ ]={'t','e','s','t','1'}; String s1=new String(char1); String s2=new String(char2,0,4); System.out.println(s1.equals(s2)); } }A.trueB.falseC.testD.编译错误

阅读下面程序 public class OperatorsAndExpressions { void equalsMethodl(){ String s1=new String("how are you"); String s2=new String("how are you"); System.out.println(s1==s2); } public static void main(String args[]){ OperatorsAndExpressions perAndExp=new OperatorsAndExpressions(); OperAndExp.equalsMethod1(); } } 程序运行结果是( )。A. ==B.trueC.假D.equal

下列程序执行后,屏幕上显示的应是 public class Testyyy {public static void main(String[]args) {char charl[]={,'t' 'e''s],'t'}; char char2[]={'t','e','s','t','1'}; String s1=new String(char1); String s2=new String(char2,0,4); System.out.println(s1.equals(s2)); } }A.trueB.假C.testD.编译错误

下列语句输出结果为( )。 public class test { public static void main(StringArgsl[]) { String s1=new String("How"); String s2=new String("How"); System.out.println(!(s1==s2)); } }A.falseB.trueC.1D.0

下列代码段的执行结果是( )。 public class Test { public static void main(String args[ ]) { String s1= new String("hello"); String s2= new String("hello"); System.out.println(s1==s2); System.out.println(s1.equal(s2)); } }A.true falseB.true trueC.false trueD.false false

有如下代码段 public class OperatorAndExceptions { public static void main(String args[ ] { int i=10,j=15; System.out.println(i==j); String s1 = new String("how are you!"); String s2=new String("how are you!"); System.out.println(s1==s2); } } 其输出为( )。A.true falseB.true trueC.false trueD.false false

下列语句输出结果为( )。public class test{public static void main(String args []){String s1=new String("How");String s2=new String("How");System.out.println(!(s1 ==s2));}A.falseB.trueC.1D.0

下列代码的执行结果是______。 public class ex55 { public static void main(String args[] ) { String s1=new String("hello"); String s2=new String("hello"); System.out.print (s1==s2); System.out.print (","); System.out.println (s1.equals (s2)); } }A.true, falseB.true, trueC.false, trueD.false, false

下列程序的执行结果为 Private Sub Commandl_Click() Dim s1 As String ,s2 As String s1= "abcd" Call Transfer(sl,s2) Print s2 End Sub Private Sub Transfer (ByVal xstr As String,ystr As String) Dim tempstr As String ystr=tempstr End SubA.dcbaB.abdcC.abcdD.dabc

关于以下程序段,正确的说法是1. String s1="Hello";2. String s2="Hello";3. if(s1= =s2、4. System.out.println("s1= =s2");5. if (s1.equals(s2、)6. System.out.println("s1.equals(s2、");A. 行4与行6都将执行B. 行4执行,行6不执行C. 行6执行,行4不执行D. 行4、行6都不执行

下面哪个是对字符串String的正确定义()。A、String s1=null;B、String s2=’null’;C、String s3=(String)‘abc’;D、String s4=(String)‘/uface’;

使用String s1=new String("Java");String s2=new String("Java")创建两个字符串时,s1,s2使用不同的内存空间

单选题下面哪个是对字符串String的正确定义()。AString s1=null;BString s2=’null’;CString s3=(String)‘abc’;DString s4=(String)‘/uface’;