java 有缓冲区吗？

Question

            *System.out.print("곱하고자 하는 두수 입력>>");
            a = sc.nextInt();
            b = sc.nextInt();
            System.out.printf("" + a + "*" + b + "=" + "%d", a * b);
            break;
        } catch (InputMismatchException e) {
            System.out.println("실수는 입력하면 안됩니다.");
            String c= sc.nextLine();*

如果它有缓冲区，我可以像C一样使用它吗？
java 是否有像 fflush() 这样的指令？

Answer 1

Java 有 System.out.flush() 但是它会在打印等时自动刷新，因此您通常不需要调用它。

https://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html

a PrintStream can be created so as to flush automatically; this means that the flush method is automatically invoked after a byte array is written, one of the println methods is invoked, or a newline character or byte ('\n') is written.

java 有缓冲区吗？

Does the java has a buffer?

java

buffer