Reputation: 573
After getting a list of installed programs I am writing all of them to a pro.txt file.
String filename="C:\\Users\\Zeeshan\\Desktop\\pro.txt";
FileWriter fileWriter =new FileWriter(filename);
BufferedWriter br =new BufferedWriter(fileWriter);
String command = "powershell.exe \"Get-ItemProperty HKLM:\\Software\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\* | Select-Object DisplayName | Format-Table –AutoSize\"";
Process p = Runtime.getRuntime().exec(command);
p.getOutputStream().close();
BufferedReader input =new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
int number=0;
while ((input.readLine()) != null)
{
line=input.readLine();
br.write(++number+"."+line);
br.newLine();
}
br.close();
input.close();
But when I am trying to read that file using buffered reader it always misses one line after each output.
FileReader fr=new FileReader(filename);
BufferedReader br1=new BufferedReader(fr);
String line1;
while(br1.readLine()!=null)
{
line1=br1.readLine();
System.out.println(line1);
}
br1.close();
My output is like in this form Please also guide me why null is appearing at the end.
2.
4.Google Chrome
6.RuntimePack 15.7.22
8.Scan
10.
12.
14.4500K710_Software_Min
16.Apple Software Update
18.Microsoft Visual C++ 2015 x86 Additional Runtime - 14.0.24215
20.WebReg
22.Update for Microsoft .NET Framework 4.6.1 (KB4014606)
24.Adobe Refresh Manager
26.Microsoft Visual C++ 2015 x86 Minimum Runtime - 14.0.24215
28.4500K710
30.Apple Application Support (32-bit)
32.
34.
36.BufferChm
null
Upvotes: 0
Views: 84
Reputation: 13
Create a temporary Boolean variable to continue the loop:
Boolean continueLoop = true;
while (continueLoop) {
line = input.readLine();
if(line == null) {
continueLoop = false; // break;
}
br.write(++number+"."+line);
br.newLine();
}
Upvotes: 1
Reputation: 69470
You read two lines in every loop:
while(br1.readLine()!=null) //first
{
line1=br1.readLine(); //second
System.out.println(line1);
}
Change to
while((line1= br1.readLine())!=null)
{
System.out.println(line1);
}
Upvotes: 4