太空堡垒 - OSCHINA - 中文开源技术交流社区

2023/05/26 21:33

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一、Synchronized概述多个线程访问同一个资源时，需要对该资源上锁。即同时只允许一个线程访问该资源。任何线程要执行synchronized里的代码，都必须先拿到锁。synchronized底层实现，JVM并没...

monitor class java synchronized lang method2 method1 monitorexit monitorenter test2 test this notify

2023/04/30 19:06

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本文所说的Java读取超大文件的前提条件： 1、此处所说的超大文件，是指至少2G以上，可能是10G或者更大。 2、文件内容是单行可处理的类型，通常为csv文件、txt文件等文本文件。好了，前提已说...

star java slice woc 3000w 600w cost readme integer size value blockio 75gb bufferreader 1min

2023/04/29 21:24

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一、IO概念 • I/O 即输入Input/ 输出Output的缩写，其实就是计算机调度把各个存储中（包括内存和外部存储）的数据写入写出的过程； • java中用“流（stream）”来抽象表示这么一个写入写出...

java reader stream word flush output writer outputstream close input inputstream

2023/04/27 21:21

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一、IO概念 • I/O 即输入Input/ 输出Output的缩写，其实就是计算机调度把各个存储中（包括内存和外部存储）的数据写入写出的过程； • java中用“流（stream）”来抽象表示这么一个写入写出...

java reader stream word flush inputstream writer outputstream close output input

2023/04/27 21:20

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Java中使用字节流可以拷贝任何格式的文件，在这里使用四种方法测试拷贝文件耗时。 import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import...

java

2023/04/26 14:07

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DataInput和DataOutput两个接口分别提供了从流中读取二进制数据转化为java基本数据和向流中写入由java基本数据转成的二进制数据，功能十分强大。一、DataInput 接口用于从二进制流中读取字节...

java datainput dataoutput ioexception eofexception string endoffile

2023/04/18 20:32

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The JavaFX TabPane is a container control which can contain multiple tabs (sections) internally, which can be displayed by clicking on the tab with the title on top of the TabPa...

class scene javafx control tabpane addtabstotabpanetodisplayanycontent tabs

2023/04/16 15:14

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The JavaFX SplitPane is a container control that can contain multiple other components inside it. In other words, the SplitPane is split between the controls it contains. Betwee...

javafx control scene splitpane hereisafulljavafx ifyoudo instance youdosoviathe

2023/04/16 15:11

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The JavaFX TitledPane control is a container control which displays its content inside a a pane (box) which at the top contains a title - hence the name TitledPane. The TitledPa...

control titledpane javafx class scene instance youdosobycallingits programmatically looks method

2023/04/16 15:02

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The JavaFX Accordion control is a container control which can contain several sections internally, each of which can have their content expanded or collapsed. The Accordion cont...

accordion control javafx scene titledpane javafxtitledpane hereisascreenshotofajavafx

2023/04/16 10:34

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一、按字节读取内容 public class ReadFromFile { /** * 以字节为单位读取文件，常用于读二进制文件，如图片、声音、影像等文件。 */ public static void readFileByBytes(String fileName....

java

2023/04/15 22:57

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A JavaFX DirectoryChooser is a dialog that enables the user to select a directory via a file explorer from the user's local computer. The JavaFX DirectoryChooser is implemented ...

directorychooser data json javafx stage showdialog hereisanexampleofcreatingajavafx ismeantwhat

2023/04/15 22:14

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A JavaFX FileChooser class (javafx.stage.FileChooser) is a dialog that enables the user to select one or more files via a file explorer from the user's local computer. The JavaF...

filechooser javafx class data button windows stage dialog showopendialog method javafxfilechooser

2023/04/15 22:07

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The JavaFX ProgressBar is a control capable of displaying the progress of some task. The progress is set as a double value between 0 and 1, where 0 means no progress and 1 means...

javafx class scene progressbar control.progressbar javafxprogressbar taskcompleted youcancreatea

2023/04/15 08:55

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The JavaFX Tooltip class (javafx.scene.control.Tooltip) can display a small popup with explanatory text when the user hovers the mouse over a JavaFX control. A Tooltip is a well...

tooltip scene javafx class control button method instance javafxtooltip

2023/04/15 08:31

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The JavaFX ToolBar class (javafx.scene.control.ToolBar) is a horizontal or vertical bar containing buttons or icons that are typically used to select different tools of a JavaFX...

toolbar scene control toit class javafx infact javafxtoolbar

2023/04/15 08:20

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The JavaFX ToolBar class (javafx.scene.control.ToolBar) is a horizontal or vertical bar containing buttons or icons that are typically used to select different tools of a JavaFX...

toolbar scene toit control class infact javafx javafxtoolbar creatingatoolbarinordertocreateajavafx

2023/04/15 08:15

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A JavaFX TextArea control enables users of a JavaFX application to enter text spanning multiple lines, which can then be read by the application. The JavaFX TextArea control is ...

scene gettext control class textarea javafx button method controlviaits settext object

2023/04/14 21:31

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The JavaFX Slider control provides a way for the user to select a value within a given interval by sliding a handle to the desired point representing the desired value. The Java...

control slider scene method

2023/04/14 10:48

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