创建一个类,使用PrintWriter向输出文件中写入双精度、整数、字符、boolean和String类型的值各一个。然后用标准的文本编辑器打开该文件,看看通过文本编辑器是否能正确显示该文件.
import java.io.*;
public class SimpleCharOutputTest{
public static void main(String args[]){
double Pi = 3.1415;
int i = 10;
boolean okay = true;
char cc = 'J';
String s = "Java C Pascal";
try{
FileWriter fw = new FileWriter("sample-char.txt");
PrintWriter out = new PrintWriter(new BufferedWriter(fw));
out.println(Pi);
out.println(i);
out.println(okay);
out.println(cc);
out.println(s);
out.close();
if (out.checkError())
System.out.println("An error has occured during output.");
}catch(IOException ioe) {
System.out.println("Error while opening the file.");
}
}
}