Below is a simple code snippet to show it’s usage. If you want to create a new file and at the same time write some data into it, you can use FileOutputStream write method. tmp directory doesn't exist, let's create itįile file.txt already exists in project root directoryįile tmp/file.txt already exists in project root directory Pankaj:~/CODE/JavaFiles/bin$ java com/journaldev/files/CreateNewFileįile /Users/pankaj/file.txt already existsĮxception in thread "main" java.io.IOException: No such file or directory first execution from classes output directory If you run the same program from terminal classes directory, here is the output. Any subsequent execution results in the following output: File /Users/pankaj/file.txt already existsįile tmp/file.txt already exists in the project root directory Tmp/file.txt File Created in Project root directoryįirst two files were already present, so createNewFile() returns false, third file was created in tmp directory and returns true. File /Users/pankaj/file.txt already existsįile file.txt already exists in the project root directory So I created “tmp” directory in the project root and executed the program again, here is the output. So it’s clear that createNewFile() just tries to create the file and any directory either absolute or relative should be present already, else it throws IOException. Java.io.IOException: No such file or directoryĪt java.io.UnixFileSystem.createFileExclusively(Native Method)Īt java.io.File.createNewFile(File.java:947)Īt .main(CreateNewFile.java:32)įor the relative path, it throws IOException because tmp directory is not present in the project root folder. Users/pankaj/file.txt File Createdįile.txt File Created in Project root directory When we execute the above program from Eclipse IDE for the first time, the below output is produced.
Public static void main(String args) throws IOException else ("File "+relativePath+" already exists in the project root directory")
#Java create new file menu how to#
* This class shows how to create a File in Java Let’s see different scenarios with a simple java program to create a new file in java.
While creating the file path, we should use System property parator to make our program platform independent. If we run the program from command line, for the non-absolute path, File object tries to locate files from the current directory. For a non-absolute path, File object tries to locate files in the project root directory. When we create the File object by passing the file name, it can be with absolute path, or we can only provide the file name or we can provide the relative path. The files created is empty and of zero bytes. This method also throws java.io.IOException when it’s not able to create the file. File createNewFile() method returns true if new file is created and false if file already exists. When we initialize File object, we provide the file name and then we can call createNewFile() method to create new file in Java. Java.io.File class can be used to create a new File in Java. There are three popular methods to create file in java. Today we will look into different ways to create a file in java. Creating a file is a very common IO operation.
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