Question

任何人都能够确切解释以下含义:

System.out.println()

我知道:

系统:

www.un.org/Depts/DGACM/index_spanish.htm 我不知道“没有”<>。

www.un.org/Depts/DGACM/index_spanish.htm 法定方法。

Answer 1

out is a static field that holds a reference to PrintStream object.

http://www.ohchr.org。

此处为<代码>out在<编码>上的变化>。

/**
 * The "standard" output stream. This stream is already
 * open and ready to accept output data. Typically this stream
 * corresponds to display output or another output destination
 * specified by the host environment or user.
 * <p>
 * For simple stand-alone Java applications, a typical way to write
 * a line of output data is:
 * <blockquote><pre>
 *     System.out.println(data)
 * </pre></blockquote>
 * <p>
 * See the <code>println</code> methods in class <code>PrintStream</code>.
 *
 * @see     java.io.PrintStream#println()
 * @see     java.io.PrintStream#println(boolean)
 * @see     java.io.PrintStream#println(char)
 * @see     java.io.PrintStream#println(char[])
 * @see     java.io.PrintStream#println(double)
 * @see     java.io.PrintStream#println(float)
 * @see     java.io.PrintStream#println(int)
 * @see     java.io.PrintStream#println(long)
 * @see     java.io.PrintStream#println(java.lang.Object)
 * @see     java.io.PrintStream#println(java.lang.String)
 */
public final static PrintStream out = nullPrintStream();

这就是<条码>印本/代码>。方法如下:

/**
 * Terminates the current line by writing the line separator string.  The
 * line separator string is defined by the system property
 * <code>line.separator</code>, and is not necessarily a single newline
 * character (<code> 
 </code>).
 */
public void println() {
newLine();
}

Answer 2

a. 不属于系统的一个静态领域,即:

rel=“nofollow”http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/System.html

Answer 3

<代码>System为类别:out为<代码>System等的静态领域,其类型为PrintStream。 <代码>印数/代码>是<代码>PrintStream类别的一种实例方法。

仅看 javadoc,而你全心全意回顾。

Answer 4

"out" is a static public field with Stream value.

public final class System {
    public final static PrintStream out = nullPrintStream();
...
}

Answer 5

<代码>out是类别静态领域<代码>PrintStream。 http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/System.html

Answer 6

资料来源:。

Systemout.println(>

System is a built-in class present in the java.lang package. This class has a final modifier, which means that, it cannot be inherited by other classes. It contains predefined methods and fields, which provides facilities like standard input, output, etc.

out is a static final field (ie, variable) in the System class, which is of the type PrintStream (a built-in class, contains methods to print the different data values). static fields and methods must be accessed by using the class name, so ( System.out ).

<代码>out 此处指<代码>PrintStream类参考变量。

println() is a public method in the PrintStream class used to print the data values. Hence to access a method in the PrintStream class, we use out.println() (as non static methods and fields can only be accessed by using the reference variable)

指称:

int i = 3;
System.out.println(i);

上述代码在屏幕上打印了3份,并将控制线上下。

Answer 7

Q. 为了确定特定法典中S的长度,你必须用什么文字代替Ans?

 class Test{

       static String S="java";

       public static void main(String[] args) {

       System.out.println(Ans);

       }

 }

 Ans: Test.S.length()

在这里,S是试验舱的固定型号。
因此,静态变量是使用类别——名称:static_variable_name as Test.S
为了寻找静态变量S的长度,S是物体,而我们知道物体可进入S.length()类的长度方法。

在System.out.println()中使用了Same概念:

 class System{

      static PrintStream out;

 }

职等:姓名
在系统类别中,印刷机的固定变量是存在的。它还是同一类的印刷机和印刷机。

友情链接