blocks|key|977550|text|Java是一种冗长的语言。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|977551|如果你只学了3天，而这已经困扰着你，也许你最好学习一门不同的语言，比如Scala：|977552|scala>+println("Hello+World")
Hello+World|code-block|syntax|javascript|977553|从松散的意义上讲，这等同于使用“库”来启用较短的表达式;)|977554|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Java is a verbose language.

If you are only 3 days in, and this is already bothering you, maybe you'd be better off learning a different language like Scala:

<pre><code>scala&gt; println("Hello World")
Hello World
</code></pre>

In a loose sense, this would qualify as using a "library" to enable shorter expressions ;)

blocks|key|1191859|text|使用log4j或JDK日志记录，这样您就可以在类中创建一个静态日志记录器，并像这样调用它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1191860|LOG.info("foo")|code-block|syntax|javascript|1191861|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Use log4j or JDK logging so you can just create a static logger in the class and call it like this:

<pre><code>LOG.info("foo")
</code></pre>

blocks|key|977604|text|void+p(String+l){
System.out.println(l);
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|977605|最短的。勇敢点儿。|unstyled|977606|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>void p(String l){
System.out.println(l);
}
</code></pre>

Shortest. Go for it.

blocks|key|1191911|text|一些有趣的替代方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1191912|选项1|1191913|PrintStream+p+=+System.out;
p.println("hello");|code-block|syntax|javascript|1191914|选项2|1191915|PrintWriter+p+=+new+PrintWriter(System.out,+true);
p.println("Hello");|1191916|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Some interesting alternatives:

OPTION 1

<pre><code>PrintStream p = System.out;
p.println("hello");
</code></pre>

OPTION 2

<pre><code>PrintWriter p = new PrintWriter(System.out, true);
p.println("Hello");
</code></pre>

blocks|key|1191959|text|正如Bakkal解释的那样，对于键盘快捷键，在netbeans中，您可以转到工具->选项->编辑器->代码模板，并添加或编辑您自己的快捷键。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1191960|在Eclipse中，它位于模板上。|1191961|entityMap^0|N|8|0|1|7|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

As Bakkal explained, for the keyboard shortcuts, in <code>netbeans</code> you can go to tools->options->editor->code templates and add or edit your own shortcuts.

In <code>Eclipse</code> it's on templates.

blocks|key|1192005|text|也许这是一个小问题，但是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1192006|import+static+System.out;

public+class+Tester
{
++++public+static+void+main(String[]+args)
++++{
++++++++out.println("Hello!");+
++++}
}|code-block|syntax|javascript|1192007|...generated一个编译时错误。我通过将第一行编辑为：|1192008|import+static+java.lang.System.out;|1192009|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

A minor point perhaps, but:

<pre><code>import static System.out;

public class Tester
{
 public static void main(String[] args)
 {
 out.println("Hello!"); 
 }
}
</code></pre>

...generated a compile time error. I corrected the error by editing the first line to read:

<pre><code>import static java.lang.System.out;
</code></pre>

blocks|key|977792|text|使用System.out.println()是一种糟糕的做法(最好使用日志记录框架)+->您的代码库中不应该有太多的实例。使用另一种方法来简单地缩短它似乎不是一个好的选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|977793|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Using System.out.println() is bad practice (better use logging framework) -> you should not have many occurences in your code base. Using another method to simply shorten it does not seem a good option.

blocks|key|977803|text|在Java+8中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|977804|++++List<String>+players+=+new+ArrayList<>();
+++++players.forEach(System.out::println);|code-block|syntax|javascript|977805|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In Java 8 :

<pre><code> List&lt;String&gt; players = new ArrayList&lt;&gt;();
 players.forEach(System.out::println);
</code></pre>

Please advice on where can I find the lib in order to use the shorter expression of <code>System.out.println()</code> and where should I place that lib.

How to make System.out.println() shorter

Eclipse

Java

请建议我在哪里可以找到库，以便使用System.out.println()的较短表达式，以及我应该在哪里放置该库。

问如何缩短System.out.println()
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