Java (Eclim + Vim) “system.out.print"不工作 [英] Java (Eclim + Vim) "system.out.print" not working

问题描述

我是 Java 编程的新手，今天在使用 eclim 和 vim 时，我发现 System.out.println();功能不工作.

I am new to Java programming, and today while messing with eclim and vim, I discovered that the System.out.println(); function is not working.

class apples{
public static void main(String args[]){
    double tuna = 5.28;
    System.out.print(tuna);
}
}

这没有给我结果.

但是当我这样做时:

class apples{
public static void main(String args[]){
    double tuna = 5.28;
    System.out.println(tuna);
}
}

(唯一的区别是println")我得到 5.28，正确的行为.

(The only difference is the "println") I get 5.28, the correct behavior.

有谁知道为什么会发生这种情况，或者这是应该发生的方式吗?

Anyone know why this would happen, or is this the way it should be happening?

推荐答案

.println() 自动附加换行符，.print() 不会.

.println() automatically appends a newline, .print() does not.

System.out 是一个缓冲流；您需要 .flush() 才能显示 .print() 的结果(显然，在您打印之后 执行此操作)..println() 中的换行符导致输出被刷新，这就是为什么你不需要它.

System.out is a buffered stream; you need to .flush() for the result of .print() to appear (do it after you print, obviously). The newline in .println() causes the output to be flushed, which is why you don't need it there.

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