/*編寫一個程序,將a.txt文件中的單詞與b.txt文件中的單詞交替合併到c.txt文件中, * a.txt文件中的單詞用回車符分隔,b.txt文件中用回車或空格進行分隔*/ import java.io.File; import java.io.FileReader; import java.io.FileWriter; public class test1{ public static void main(String[] args) throws Exception{ try { FileManager a = new FileManager("a.txt",new char[]{'\n'}); FileManager b = new FileManager("b.txt",new char[]{'\n',' '}); FileWriter c = new FileWriter("c.txt"); String aWord = null; String bWord = null; while((aWord = a.nextWord()) !=null ){ c.write(aWord + "\n"); bWord = b.nextWord(); if(bWord != null) c.write(bWord + "\n"); } while((bWord = b.nextWord()) != null){ c.write(bWord + "\n"); } c.close(); } catch (Exception e) { e.printStackTrace(); } } } class FileManager{ String[] words = null; int pos = 0; public FileManager(String filename,char[] seperators) throws Exception{ File f = new File(filename); FileReader reader = new FileReader(f); char[] buf = new char[(int)f.length()]; int len = reader.read(buf); String results = new String(buf,0,len); String regex = null; if(seperators.length >1 ){ regex = "" + seperators[0] + "|" + seperators[1]; }else{ regex = "" + seperators[0]; } words = results.split(regex); } public String nextWord(){ if(pos == words.length) return null; return words[pos++]; } }
文件按照規則合併
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