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Difference between mkdir() and mkdirs() in java for java.io.File [closed]
...kdirs() also creates parent directories in the path this File represents.
javadocs for mkdirs():
Creates the directory named by this abstract pathname, including any
necessary but nonexistent parent directories. Note that if this
operation fails it may have succeeded in creating some of the...
Java string split with “.” (dot) [duplicate]
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"." is a special character in java regex engine, so you have to use "\\." to escape this character:
final String extensionRemoved = filename.split("\\.")[0];
I hope this helps
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【解决】ChartData2D 二维图表组件报错 - 用户反馈 - 清泛IT社区，为创新赋能！
运行故障
java.lang.Index0ut0fBoundsException: Index: 9, Size: 1 at java.util.ArrayList.add(ArrayList.java:483) at com.google.appinventor.components.runtime.LineChartBaseDataModel.addEntryFromTuple(LineChartBaseDataModel.java:89) at
com.google.appinventor.components.runtime.ChartData2D$1.run(Ch...
How do I check that a Java String is not all whitespaces?
I want to check that Java String or character array is not just made up of whitespaces, using Java?
15 Answers
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What's a good Java, curses-like, library for terminal applications? [closed]
I would like to write a Java terminal application that does screen manipulation. Are there any good libraries out there that allow you to manipulate the screen like curses in the *nix/C world?
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How do I write a correct micro-benchmark in Java?
How do you write (and run) a correct micro-benchmark in Java?
11 Answers
11
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Difference between java.exe and javaw.exe
Recently I noted that some applications are running on javaw (not in java ). What is the difference between them and how can I run my Swing application on javaw ?
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What is the use of interface constants?
I am learning Java and just found that the Interface can have fields, which are public static and final. I haven't seen any examples of these so far. What are some of the use cases of these Interface Constants and can I see some in the Java Standard Library?
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What is simplest way to read a file into String? [duplicate]
...")).useDelimiter("\\Z").next();
System.out.println(content);
This uses a java.util.Scanner, telling it to delimit the input with \Z, which is the end of the string anchor. This ultimately makes the input have one actual token, which is the entire file, so it can be read with one call to next().
T...
How to create correct JSONArray in Java using JSONObject
how can I create a JSON Object like the following, in Java using JSONObject ?
4 Answers
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