How to keep my user input on the same line after an output?

问题

I'm trying to write code that asks for the users age and then they enter it, but I want the number to appear next to the question after you enter it.

My code looks like this:

System.out.println("Enter a number: ");
num1 = userIn.nextInt();

It works fine, but the number always appears on the line below.

Output:

Enter a number:
12

What I want:

Enter a number: 12

Any suggestions?

回答1:

Use print() instead of println();

System.out.println() automatically adds a newline character. That what the ln means.

回答2:

System.out.print instead of println.

println adds a newline after it prints your output, print will just print your message.

回答3:

Because you used System.out.println which adds a new-line (\n) after the output. Use System.out.print instead.

回答4:

Use System.out.print() instead of println. Println adds a new line after the arguments inside the parameter has been passed.

来源：https://stackoverflow.com/questions/10148573/how-to-keep-my-user-input-on-the-same-line-after-an-output