Java程序上机练习题(10)

dis = new DataInputStream( in );

}

public void run( ) {//重写线程类的方法，线程启动后将执行该方法 try {//接收输出管道发送的数据：

int x; for(int i=0;i<5;i++) { x=dis.readInt(); }

catch( IOException e ) { System.out.println( e ); }

sum+=x;

System.out.println(\第\次接收数据：\

+x+\接收数据的和：\

try {sleep(1000);} catch(InterruptedException e) { } }

dis.close( );//关闭流

} }

8．使用RandomAccessFile类及其方法。 import java.io.*; public class Class1 {

public static void main( String[ ] args ) { try

{

//以随机方式写入数据

RandomAccessFile out = new RandomAccessFile( \out.writeInt(12345);//4 out.writeChar('A');//2 out.writeBoolean(true);//1 out.writeUTF(\程序设计\

//显示字符‘A' 和”程序设计“ }

catch( IOException e ) {

out.seek(4);

System.out.println(out.readChar()); out.skipBytes(1);//out.seek(7); System.out.println(out.readUTF()); System.out.println(out.getFilePointer()); System.out.println(out.length()); out.close();

System.in.read();