更多"阅读下面程序 public class ExampleStringB"的相关试题:
[单项选择]阅读下面程序
public class ExampleStringBuffer
public static void main(String[] args)
StringBuffer sb=new StringBuffer("test");
System.out.println("buffer="+sb);
System.out.println("length="+sb.length( ));
程序运行结果中,在“length=”后输出的值是
A. 10
B. 4
C. 20
D. 30
[单项选择]请阅读下面程序
public class ExampleStringBuffer
public static void main (String[]args)
StringBuffer sb=new StringBuffer("test");
System.out.printIn("buffer="+sb);
System, out.printIn("length="+sb.length( ));
程序运行结果中在“length=”后输出的值是______。
A. 10
B. 4
C. 20
D. 30
[单项选择]阅读下面程序 public class ExampleStringBuffer { public static void main(String[] args) { StringBuffer sb=new StringBuffer("test"); System.out.println("buffer="+sb); System.out.println("length="+sb.length( )); } } 程序运行结果中,在“length=”后输出的值是
A. 10
B. 4
C. 20
D. 30
[单项选择]请阅读下面程序
public class ExampleStringBuffer{
public static void main(String[]args){
StringBuffer sb=new StringBuffer("test");
System.OUt.println("buffer="+sb);
System.OUt.println("length="+sb.length
( ));}}
程序运行结果中在"length="后输出的值是( )。
A. 10
B. 4
C. 20
D. 30
[单项选择]阅读下面程序
1 public class Try extends Thread
2 Public static void main (String args[])
3 Try t=new Try( );
4 t.start( );
5
6
7 Public void run (int j)
8 int i=0;
9 while (i<5)
10 System.out.printIn("祝你成功!");
11 i++;
12
13
14
该程序要求打印5行"祝你成功!",必须改正程序中的某行代码,程序才能完成,选择正确的修改是______。
A. 将第1行的extends Thread改为implements Runnable
B. 将第3行的new Try()改为new Thread()
C. 将第4行的t.start()改为start(t)
D. 将第7行的public void run(int j)改为public void run()
[简答题]阅读以下程序代码,写出程序的功能。
public class Class34
public static void main(String[] args)
int a=1,b;
while(a<=9)
b=1;
while(b<=a)
System. out. print(" "+a+"×"+b+"="+a*b);
b++;
System. out. println( );
a++;
[单项选择]下面程序的运行结果是( )。
public class Increment
public static void main(String args[ ] )
int c;
c=5;
System. out. println(c) ;
System. out. println(c++);
System .out. println(c) ;
A. 5
B. 5
C. 6
D. 6
[单项选择]下面程序的运行结果为
#include<iostream.h>
class A
public:
A( )cout<<"1";
~A( )cout<<"2";
;
class B:public A
public:
B( )cout<"3";
~B( )cout<<"4";
;
void main( )
B b;
A. 1234
B. 1324
C. 1342
D. 3142
[单项选择]执行下面程序后,输出的正确结果是( )。
public class Test
public static void main (String args [])
System. out. print (100%3);
System. out. print(“,”);
System. out. print(100%3.0);
A. 1,1
B. 1,1,0
C. 1.0,1
D. 1.0,1.0
[单项选择]阅读下面程序
public class Increment {
public static void main( String args[] ){
int c;
c=5;
System.out.println(C) ;
System.out.println(c++);
System.out.println(C) ;
}
}
输出结果是【 】
A. 5 6 6
B. 5 5 6
C. 6 7 7
D. 6 6 6
[单项选择]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 OperAndExp=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. true
C. false
D. equal
[填空题]阅读下面程序
public class OperatorsAndExpressions
String conditionalExpression(int score)
String result;
//如果score超过60分,则结果是passed,否则是doesn’t pass
result=(score>=60)"passed":"doesn’t pass":
System.out.println(result);
return result;
public static void main(String args[])
OperatorsAndExpressions OperAndExp=new OperatorsAndExpressions( );
//条件表达式
OperAndExp.conditionalExpression(65);
程序的执行结果是______。
[单项选择]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.printIn (s1==s2);
public static void main (String args[])
OperatorsAndExpressions OperAndExp=new OperatorsAndExpressions( );
//用于复合类型数据的"= ="运算符
OperAndExp.equalsMethodl( );
程序运行结果是______。
A. ==
B. true
C. false
D. equal
[单项选择]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. TRUE
C. FALSE
D. equal