例子
以下示例显示java.io.InputStream.close()方法的用法。
package com.jc2182;
import java.io.FileInputStream;
import java.io.InputStream;
public class InputStreamDemo {
public static void main(String[] args) throws Exception {
InputStream is = null;
int i = 0;
try {
// new input stream created
is = new FileInputStream("C://test.txt");
// invoke available
i = is.available();
// number of bytes available is printed
System.out.println(i);
// releases any system resources associated with the stream
is.close();
// throws io exception on available() invocation
i = is.available();
System.out.println(i);
} catch(Exception e) {
// if any I/O error occurs
System.out.print("Sorry, the input stream is closed");
} finally {
// releases system resources associated with this stream
if(is!=null)
is.close();
}
}
}
假设我们有一个文本文件c:/test.txt ,其内容如下。该文件将用作示例程序的输入-
让我们编译并运行以上程序,这将产生以下结果-
6 Sorry, the input stream is closed