PrintWriter
来源:互联网 发布:cisco 端口安全 编辑:程序博客网 时间:2024/03/29 05:14
PrintWriter可以输出各种数据类型,而且print方法不会抛出异常,但是最后要写close()方法,否则无法达到文件上
package ch1.inputstream;
import java.io.*;
public class c{
public static void main(String args[]){
PrintWriter pw=null;
try{
pw=new PrintWriter("D:\\javadaima\\src\\ch1\\inputstream\\aa.txt");
}catch(FileNotFoundException ex){System.out.print(ex);}
pw.print(12);
pw.println("aa");
pw.close();
}
}
如果不想写close()方法就输出到文件上,请用PrintWriter(Writer out, boolean autoFlush)构造函数,如:
package ch1.inputstream;
import java.io.*;
public class c{
public static void main(String args[]){
PrintWriter pw=null;
try{
pw=new PrintWriter(new FileWriter("D:\\javadaima\\src\\ch1\\inputstream\\aa.txt"),true);
}catch(FileNotFoundException ex){System.out.print(ex);}
catch(IOException ex){}
pw.print(11);
pw.println("bb");
}
}
- PrintWriter
- PrintWriter
- PrintWriter
- PrintWriter
- PrintWriter
- printwriter
- PrintWriter
- PrintWriter
- StringWriter/PrintWriter
- StringWriter/PrintWriter
- [Java] PrintWriter
- PrintWriter类
- Printwriter对象
- JAVA PrintWriter
- BufferReader.PrintWriter
- printwriter用法
- java PrintWriter
- PrintWriter close()
- HDU 3125 Slash
- 离线安装Android SDK
- 生成所有排列
- 计算机网络基础知识 三
- 理解typename的两个含义
- PrintWriter
- Centos下配置Apache的虚拟目录
- 50道PMP考试样题
- UI TextView菜单模拟按键
- 我所担心的噩梦
- web.xml中关于Servlet、Filter、Listener的配置
- c语言字符串处理-----压缩字符串
- 构造函数 匿名类 一个类分开写
- ubuntu 11.10 安装 gcc 4.4