[jaVA学习2]InputStreamReader练习读取中文文档

InputStreamReader练习读取中文文档

继承关系：

 java.io.InputStreamReader-> java.io.Reader->java.lang.Object

try {
FileInputStream fs = new FileInputStream(
"/Users/liyanq/Documents/知识点/JAVA/StringBuffer和StringBuilder.txt");
InputStreamReader reader = new InputStreamReader(fs, "gb2312");
// 第一种方法
StringBuilder stringBuilder = new StringBuilder();
while (reader.ready()) {
stringBuilder.append((char) reader.read());
}
System.out.print(stringBuilder);
System.out.println();
System.out.print(reader.markSupported());//由于不支持mark，所以不能读取2次，不知道是不是这个原因？
System.out.println();
reader.close();
fs.close();
// 第二种方法
FileInputStream fs2 = new FileInputStream(
"/Users/liyanq/Documents/知识点/JAVA/StringBuffer和StringBuilder.txt");
InputStreamReader reader2 = new InputStreamReader(fs2, "gb2312");
char[] cha = new char[1024];
int len = reader2.read(cha);
System.out.println(new String(cha, 0, len));
reader2.close();
fs2.close();
} catch (FileNotFoundException e) {
System.out.println(e.toString());
} catch (Exception e) {
// TODO: handle exception
}