[NETBEANS-4812] System.out.print() statements placed before Scanner calls, such as scanner::next(), do not output until after input is entered only in Netbeans console

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 12.0
• Component/s: debugger - Java, java - Editor, platform - Output Window, projects - Maven
• Labels: console java jdk14 netbeans netbeans-ui output

Environment

java --version
openjdk 14.0.2 2020-07-14
OpenJDK Runtime Environment (build 14.0.2+12-46)
OpenJDK 64-Bit Server VM (build 14.0.2+12-46, mixed mode, sharing)

NetBeans About Info:
Product Version: Apache NetBeans IDE 12.0
Java: 14.0.2; OpenJDK 64-Bit Server VM 14.0.2+12-46
Runtime: OpenJDK Runtime Environment 14.0.2+12-46
System: Mac OS X version 10.15.6 running on x86_64; UTF-8; en_US (nb)

Hardware Information:
Model Name: MacBook Pro
Model Identifier: MacBookPro15,2
Processor Name: Quad-Core Intel Core i7
Processor Speed: 2.8 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Hyper-Threading Technology: Enabled
Memory: 16 GB
Boot ROM Version: 1037.147.4.0.0 (iBridge: 17.16.16610.0.0,0)
Serial Number (system): C02ZT04JP4G2
Hardware UUID: 9678EC89-6B02-50FB-84B6-CA859359FB50
Activation Lock Status: Enabled

System Software Overview:
System Version: macOS 10.15.6 (19G2021)
Kernel Version: Darwin 19.6.0
Boot Volume: Macintosh HD
Boot Mode: Normal
Computer Name: --------------
User Name: --------------
Secure Virtual Memory: Enabled
System Integrity Protection: Enabled
Time since boot: 24 days 14:53

• Flags: Patch, Important
• Assignee: Siddhesh Rane
• Reporter: Keegan Bilodeau
• Created: 17/Sep/20 22:09
• Updated: 31/Mar/21 09:10
• Resolved: 29/Sep/20 22:45

Description

I have a program that runs perfectly fine in both the terminal and in Intellij, but then when the Java code is run inside a NetBeans project, it outputs incorrectly.

(Before I continue the description, I have a video here and the project itself is attached to this report)

The following is the first code that ran into the problem:

 

System.out.print("\nPlease enter a month and year (e.g. Sep 2020): ");
selectedMonth = Month.valueOf(keyboard.next().toUpperCase());
selectedYear = keyboard.nextInt();

 

In Intellij and the terminal this was the output (which is correct):

Welcome to Keegan Bilodeau's Calendar Application!


Please enter a month and year (e.g. Sep 2020): l
Error: You did not enter a valid month!


Please enter a month and year (e.g. Sep 2020): 

 

This is the output in NetBeans (which is wrong):

Welcome to Keegan Bilodeau's Calendar Application!
l
Please enter a month and year (e.g. Sep 2020): Error: You did not enter a valid month!

 

**Something to note is that when the System.out.print() is changed to System.out.println(), the code runs properly, but with a newline, which is not what I wanted nor should be necessary.  One might assume that it was because System.out.println() flushes the stream; however, Using System.out.print() in conjunction with System.out.flush() changed nothing

 

For even more information regarding the issue, see the attached files.