Question

<代码>PrintWriter(OutputStream out) 这种方法不自动冲动。

PrintWriter(OutputStream out, boolean autoFlush)

这种方法确实是自动线冲积。

My question is what is line flushing?

    public static void main(String[] args) throws FileNotFoundException {
        int myInt = 2;



        PrintWriter outFile = new PrintWriter(System.out);

        outFile.println();
        outFile.println(myInt);

    }
}

the output of the program is nothing WHy?

如果在《印刷手册》中添加一字,则在奥塞莱尔印刷两部。

注

PrintWriter outFile = new PrintWriter(System.out, true);

因此,线上流利意味着什么? 增编

Answer 1

预计会发生这种情况。在下游/作家上设置汽车或电话flush。

See javadoc of OutputStream.flush, for more details.

Answer 2

The autoFlush flag is for only println(), printf() and format() method of PrintWriter(). If you don t set this flag (or use the constructor without the boolean flag), you will have to explicitly call flush() method on PrintWriter object after calling the above-mentioned methods.

<>References:

PrintWriter(Writer writer, boolean autoFlush)

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