My problem is that when I try to gather the parts of an array, the part of my code that decides what to keep seems to be making a mistake, though I can't fathom how it is making that mistake. My code is posted below. You should see the parts of my code that I am talking about, but if you don't understand, please ask!
static void remove(String str) {
String[] keep = new String[getEntries()];
String[] removed = new String[getEntries()];
// Go through the file, and only add the non-str ones to the keep array.
String test = "none";
int j = 0;// the spot in the array of keep. When something is NOT added,
// i is advanced, while j is not.
int k = 0;//removed's j.
for (int i = 0; i < (getEntries() - 1)/*
* To convert to an array friendly
* form
*/; i++) {
test = getLine(i);
if (!test.equals(str)) {// DO add
keep[j] = test;
test = "none";
j++;
} else {
removed[k] = test;
test = "none";
k++;
// j doesn't increment.
}
}
// Write all of the keeps to file.
for(int i=0;i<k;i++)
System.out.println("Removed: "+removed[i]);
System.out.println("End of removed.\n\n");
System.out.println("Saved:");
for (int i = 0; i < j; i++) {
if (i == 0) {//Works
PrintWriter pw = null;
try {
pw = new PrintWriter(new FileWriter(base
+ "apps/install.txt"));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
pw.print(keep[0]);
} catch (NullPointerException e) {
e.printStackTrace();
System.out
.println("NullPointer. Probably happened because of the above try/catch statments");
}
continue;
}
add(keep[i]);// write them to the new file.
}
System.out.println("End of Saved.\n\n");
}This is my remove(String str) method. There is also an add method, which does the opposite to what this code does. Base, the variable, is a string, containing the location of the file that I want to write to.
My idea is to scan through a file, and take out the parts that match the parameter, str.
Thanks in advance,
Jack.