output

[Camden]

I want to output (.txt document) a String Array (using PrintWriter) (every line=1 String). How can i not include the Strings that are empty?

[staykovmarin]

Code:

			PrintWriter wrt = new PrintWriter(new File("test.txt"));
			String[] tst = new String[]{"foo","foo","bar"};
			// clear the file
			wrt.write("");
			for (int i = 0; i < tst.length; i ++) {
				wrt.append(tst[i]+"\n");
			}
			wrt.close();

[hardwired]

Code:

        PrintWriter pw = new PrintWriter("testOutput.txt");
        String[] strs = { "hello", "world", "", "circus" };
        for(int j = 0; j < strs.length; j++) {
            if(!strs[j].equals(""))
                pw.println(strs[j]);
        }
        pw.close();

[staykovmarin]

Sorry i misread.
extra note:

from hardwired:

Code:

            if(!strs[j].trim().equals(""))
                pw.println(strs[j]);

if you add the trim(), you are making sure that if the string array has a space element (so " ") it will not be put in the file.

Also, String.length() yields better performance.