Java读取txt文件

Java读取txt文件 /* * ?ÁÈ?char */ private String readtxt() throws IOException{ BufferedReader br=new BufferedReader(new FileReader(";d:/sql.txt";)); String str=";";; String r=br.readLine(); while(r!=null){ str+=r; r=br.readLine(); } return str; } Java?úÂë /* * ?ÁÈ?char */ private String readtxt() throws IOException{ BufferedReader br=new BufferedReader(new FileReader(";d:/sql.txt";)); String str=";";; String r=br.readLine(); while(r!=null){ str+=r; r=br.readLine(); } return str; } Java?úÂë /* * ?ÁÈ?char */ private String readtxt2() throws IOException{ String str=";";; FileReader fr=new FileReader(";d:/sql.txt";); char[] chars=new char[1024]; int b=0; while((b=fr.read(chars))!=-1){ str+=String.valueOf(chars); } return str; } Java?úÂë /* * ?ÁÈ?char */ private String readtxt2() throws IOException{ String str=";";; FileReader fr=new FileReader(";d:/sql.txt";); char[] chars=new char[1024]; int b=0; while((b=fr.read(chars))!=-1){ str+=String.valueOf(chars); } return str; } Java?úÂë /* * ?ÁÈ?bytes */ private Byte[] readtxt3() throws IOException{ InputStream input=new FileInputStream(";d:/sql.txt";); byte[] b=new byte[1024]; ArrayList<;Byte>; lsbytes=new ArrayList<;Byte>;(); int n=0; while((n=input.read(b))!=-1){ for(int i=0;i<;n;i++){ lsbytes.add(b[i]); } } return (Byte[])(lsbytes.toArray()); } Java?úÂë /* * ?ÁÈ?bytes */ private Byte[] readtxt3() throws IOException{ InputStream input=new FileInputStream(";d:/sql.txt";); byte[] b=new byte[1024]; ArrayList<;Byte>; lsbytes=new ArrayList<;Byte>;(); int n=0; while((n=input.read(b))!=-1){ for(int i=0;i<;n;i++){ lsbytes.add(b[i]); } } return (Byte[])(lsbytes.toArray()); }