比較時,程序輸出一串空值。我認爲我沒有正確比較,儘管我已經嘗試過==並且不輸出任何內容。下面是代碼再下面是NameAgeOcc.txt比較字符串數組輸出Null
import java.util.Scanner;
import java.io.*;
public class MoreSelectionSortAndParallelArrays
{
public static void main(String[] args)
{
Scanner inputStream = null;
try
{
inputStream = new Scanner(new FileInputStream("NameAgeOcc.txt"));
}
catch(FileNotFoundException error)
{
System.out.println("Unable to open input file.");
System.exit(0);
}
int length=inputStream.nextInt();
int ages [] = new int[length];
String names [] = new String[length];
String occupations [] = new String[length];
String junk= inputStream.nextLine() ;
int i;
for(i=0;i<length;i++)
{
names[i]=inputStream.nextLine();
ages[i]=inputStream.nextInt();
junk=inputStream.nextLine();
occupations[i]=inputStream.nextLine();
}
System.out.printf("%-25s%-8s%24s%n","Names"," Ages","Occupations");
for(i=0;i<length;i++)
{
System.out.printf("%-25s%6d%24s%n",names[i],ages[i],occupations[i]);
}
String Temp, Temp3;
int minVal,minPos,y,Temp2;
for(i=0;i<length;i++)
{
minVal=ages[i];
minPos=i;
for(y=i+1;y<length;y++)
{
if(ages[y]<minVal)
{
minVal=ages[y];
minPos=y;
}
}
Temp2 = ages[minPos];
ages[minPos] = ages[i];
ages[i] = Temp2;
Temp = names[minPos];
names[minPos] = names[i];
names[i] = Temp;
Temp3 = occupations[minPos];
occupations[minPos] = occupations[i];
occupations[i] = Temp3;
}
System.out.println();
System.out.printf("%-25s%-8s%24s%n","Names"," Ages","Occupations");
for(i=0;i<length;i++)
{
System.out.printf("%-25s%6d%24s%n",names[i],ages[i],occupations[i]);
}
int studentCount=0;
for (i=0;i<length;i++)
{
if(occupations[i].equalsIgnoreCase("student"));
studentCount++;
}
int studentAges [] = new int[studentCount];
String studentNames [] = new String[studentCount];
System.out.printf("%-25s%-8s%n","Names"," Ages");
for (i=0;i<studentCount;i++)
{
System.out.printf("%-25s%6d%n",studentNames[i],studentAges[i]);
}
inputStream.close();
}
}
中的.txt
15
Smith, John
26
Baker
Jones, Susan
15
Student
Mouse, Mickey
31
Theme park employee
Mouse, Mighty
48
Cartoon super hero
Anderson, William
35
Computer Programmer
Parker, Cindy
18
Author
McCain, John
20
Student
Armstrong, Michelle
17
Student
Thompson, Anne
29
Doctor
Li, Steve
15
Student
James, Tanya
20
Student
Moore, James
32
Teacher
Andrews, Julie
75
Actress
Obama, Michelle
46
Lawyer
Michaels, Todd
51
Student
確保複製的空行的.TXT結束(按回車鍵或返回)
謝謝。我現在覺得有點笨,但我得到它的工作! – Chromey 2012-03-30 07:50:15