NumberFormat nf= NumberFormat.getInstance(); nf.setMaximumFractionDigits(4); nf.setMinimumFractionDigits(2); String a = nf.format(3.1415926); String b = nf.format(2); Which two are true about the result if the default locale is Locale.US?()
第1题:
Given:12.NumberFormatnf=NumberFormat.getInstance();13.nf.setMaximumFractionDigits(4);14.nf.setMinimumFractionDigits(2);15.Stringa=nf.format(3.1415926);16.Stringb=nf.format(2);WhichtwostatementsaretrueabouttheresultifthedefaultlocaleisLocale.US?()
A.Thevalueofbis2.00.
B.Thevalueofais3.141.
C.Thevalueofais3.14.
D.Thevalueofbis2.0000.
E.Thevalueofais3.1415.
F.Thevalueofais3.1416.
G.Thevalueofbis2.
第2题:
下列程序的功能是对两个整数进行比较,由考生通过输入窗口分别输入两个整数,程序
比较出结果。例如:输入第1个整数为12,第2个整数为33。比较结果显示:
12!=33
12<33
12<=33
程序有多个遗漏和错误。本题要求改一个错,填三个空。
注意:不改动程序结构,不得增行或删行。
import javax.swing.JOptionPane;
public class ex3
{
public static void main(String args[])
{
String firstNumber, //用户输入第1个字符串
secondNumber, //户输入第2个字符串
result; // a string containing the output
int number1, //较的第1个数
number2; //的第2个数
//读用户输入的第1个字符串read first number from user as a string
firstNumber=
JOptionPane.showlnputDialog("Enter first integer:");
//用户输入的第2个字符串read second number from user as a string
secondNumber=
JOptionPane.showInputDialog("Enter second integer:");
//字符串类型转换成整数类型
number1=Integer.parseInt(firstNumber);
number2=Integer.parseInt(secondNumber);
result="";
if(String.valueOf(numberl)=String.valueOf(number2))
result=String.valueOf(numberl)+"= ="+String.valueOf(number2);
if(String.valueOf(number1)!=String.valueOf(number2))
result=String.valueOf(number1)+" !="+String.valueOf(number2);
if(String.valueOf(numberl)< String.valueOf(number2))
result=result+"\n" +String.valueOf(numberl)+"<"
+String.valueOf(number2);
if(String.valueOf(numberl)>String.valueOf(number2))
result=result+"\n" +String.valueOf(numberl)+" >"
+String.valueOf(number2);
if(String.valueOf(numberl)<=String.valueOf(number2))
result=result+"\n"+String.valueOf(numberl)+" <="
+String.valueOf(number2);
if(String.valueOf(numberl)>=String.valueOf(number2))
result=result+"\n"+String.valueOf(numberl)+ ">="
+String.valueOf(number2);
______(null,result,"比较结果",______INFORMATION_MESSAGE);
//程序正常退出
______;
}
}
第3题:
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,false
B.false,true
C.true,true
D.true,false
第4题:
下列程序段的输出是( )。 public class Test { public static void main (String args[ ]) { String ss1 = new String("hello"); String ss2 = new String("hello"); System.out.println(ssl == ss2); System.out.println (ssequals(ss2)); } }
A.true, false
B.true, true
C.false, true
D.false, false
第5题:
public class Test { public static void main (String[]args) { String foo = args[1]; String bar = args[2]; String baz = args[3]; System.out.printIn(“baz = ” + baz); } } And the output: Baz = 2 Which command line invocation will produce the output?()
第6题:
11. double input = 314159.26; 12. NumberFormat nf= NumberFormat.getInstance(Locale.ITALIAN); 13. String b; 14. //insert code here Which code, inserted at line 14, sets the value of b to 3 14.159,26?()
第7题:
Which two statements are true regarding L2TP? ()(Choose two.)
第8题:
Given: 11.double input = 314159.26; 12.NumberFormat nf = NumberFormat.getInstance(Locale.ITALIAN); 13.String b; 14.//insert code here Which code, inserted at line 14, sets the value of b to 314.159,26?()
第9题:
b = nf.parse( input );
b = nf.format( input );
b = nf.equals( input );
b = nf.parseObject( input );
第10题:
b = nf.parse( input);
b = nf.format( input);
b = nf.equals( input);
b = nf.parseObject( input);
第11题:
The value of b is 2.00.
The value of a is 3.141.
The value of a is 3.14.
The value of b is 2.0000.
The value of a is 3.1415.
The value of a is 3.1416.
The value of b is 2.
第12题:
The value of b is 2.
The value of a is 3.14.
The value of b is 2.00.
The value of a is 3.141.
The value of a is 3.1415.
The value of a is 3.1416.
The value of b is 2.0000.
第13题:
A.b=nf.parse(input);
B.b=nf.format(input);
C.b=nf.equals(input);
D.b=nf.parseObject(input);
第14题:
下列语句能给数组赋值而不使用for循环的是
A.myArray{[1]="One";[2]="Two";[3]="Three";}
B.String s[5]=new String[]{"Zero", "One", "Two", "There", "Four"};
C.String s[]=new String[]{"Zero", "One", "Two", "There", "Four"};
D.String s[]=new String[]=|"Zero", "One", "Two", "There", "Four"};
第15题:
A. 1 is the default precedence.
B. A lower number is preferred.
C. A higher number is preferred.
D. 100 is the default precedence.
第16题:
下列语句能给数组赋值,而不使用for循环的是
A.myArray{[1]="One";[2]="Two";[3]="Three";}
B.String s[5]=new String[] {"Zero","One","Two","Three","Four"};
C.String s[]=new String[] {"Zero","One","Two","Three","Four"};
D.String s[]=new String[]= {"Zero","One","Two","Three","Four"};
第17题:
public class X { public static void main (String[]args) { String s1 = new String (“true”); Boolean b1 = new Boolean (true); if (s2.equals(b1)) { System.out.printIn(“Equal”); } } } What is the result?()
第18题:
Which is the earliest line in the following code after which the object created on the line marked (0) will be a candidate for being garbage collected, assuming no compiler optimizations are done? () public class Q76a9 { static String f() { String a = "hello"; String b = "bye"; // (0) String c = b + "!"; // (1) String d = b; b = a; // (2) d = a; // (3) return c; // (4) } public static void main(String args[]) { String msg = f(); System.out.println(msg); // (5) } }
第19题:
Which two statements are true about precedence values in policy?() (Choose two.)
第20题:
Given: 12. NumberFormat nf = NumberFormat.getInstance(); 13. nf.setMaximumFractionDigits(4); 14. nf.setMinimumFractionDigits(2); 15. String a = nf.format(3.1415926); 16. String b = nf.format(2); Which two statements are true about the result if the default locale is Locale.US?()
第21题:
Java Test 2222
Java Test 1 2 3 4
Java Test 4 2 4 2
Java Test 4 3 2 1
第22题:
The value of b is 2.
The value of a is 3.14.
The value of b is 2.00.
The value of a is 3.141.
The value of a is 3.1415.
The value of a is 3.1416.
The value of b is 2.0000.
第23题:
b = nf.parse( input );
b = nf.format( input );
b = nf.equals( input );
b = nf.parseObject( input );