Compiling java program under cmd prompts that the file cannot be found

Find the folder where the java code is stored, then enter "cmd" in the "Search" bar above and press Enter

When the "Command Prompt" pops up, we will know that the path on our "Command Prompt" will be consistent with the path where our java code is stored

Enter the following code according to the java file name we saved to print our code, as follows:

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Enter once: javac Hello.java, and then press Enter

Enter again: java Hello, and press Enter

The result is as shown in the figure:

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