Java FileReader类读取文件

//FileReader类读取文件

public class Demo {

public static void main(String[] args) {

try { 

FileReader fileReader = new FileReader("data.json");

char ch = ' ';

System.out.println("读取文件中字符：");

while (ch !='}') {

ch = (char) fileReader.read();

System.out.print(ch);

}

System.out.println("==文件读取完成=="); 

fileReader.close();

} catch (Exception e) {

System.out.println("系统异常："+e.getMessage());

}

}

}