1.在输出后面加\n

        System.out.print("王先生\n");

2.+"\n"

        System.out.print("王先生"+"\n");

3.格式化输出类型后面加\n

        System.out.print(“&s\n”+"王先生");

4.格式化输出类型%n

        System.out.print("%s%n","王先生");

5.println()相当于print（\n\n）即另起一行输出对应的参数