向文件bank.dat 顺序写入整形数组的数据,请将写出需要构造的输出对象outStream
import java.io*;
class BankOutput
{
int[]banks = new int[]{0,5,7,9};
public static void main(String[]args)throw Exception
{
File out = new File("bank.dat");
BankOutput bank = new BankOutput();
FileOutputStream stream = new FileOutputStream(out);
//请在这里构造outStream
for(int i = 0; i < bank.banks.length; i++)
{
outStream.writeInt(bank.banks[i]);
}
outStream.close();
stream.close();
}
}
import java.io*;
class BankOutput
{
int[]banks = new int[]{0,5,7,9};
public static void main(String[]args)throw Exception
{
File out = new File("bank.dat");
BankOutput bank = new BankOutput();
FileOutputStream stream = new FileOutputStream(out);
//请在这里构造outStream
for(int i = 0; i < bank.banks.length; i++)
{
outStream.writeInt(bank.banks[i]);
}
outStream.close();
stream.close();
}
}
解决方案 »
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import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;public class BankOutput {
int[]banks = new int[]{0,5,7,9};
public static void main(String[]args)throws Exception { //throws
File out = new File("bank.dat");
BankOutput bank = new BankOutput ();
FileOutputStream stream = new FileOutputStream(out);
//请在这里构造outStream
DataOutputStream outStream = new DataOutputStream(stream);//构造
for(int i = 0; i < bank.banks.length; i++)
outStream.writeInt(bank.banks[i]);
outStream.close();
stream.close();
}
}