use BufferedReader.readLine() to get the first line. ... And add brTest.close() or better use the try (BufferedReader...) { } construction of Java ... ... <看更多>

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Java : TextFileReader. ... Abstraction for reading the context of a text file into a String. ... as well as reading the first line of text from the file. ... <看更多>

Getting input data into a program from the command line, or from ... The goal of our first example of reading files is to read the measurement values in ... ... <看更多>

You could do that with ed : ed -s infile <<\IN 2>/dev/null 1s/PATTERN/&/ ,p q IN. the trick here is to try to replace PATTERN on 1st line with itself. ed ... ... <看更多>