What is the difference between next and nextLine methods in Java?

next() method will recognize spaces as the end of input.

(Recommended tutorial: java introductory tutorial)

Code example:

String str1 = sc.next();
System.out.println(str1);

输入 abcd efg
输出 abcd

nextLine() method will recognize a newline as the end of input.

(Video tutorial recommendation: java video tutorial)

Code example:

String str1 = sc.nextLine();
System.out.println(str1)

Summary:

requires spaces To truncate the input, use next(). For example, if you enter 1 (space) 2, you can get a=1, b=2;

If you need to include spaces, use nextLine(), for example, enter 1 (space) 2. , you can get a = 1 (space) 2.

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