Java –如何将名称打印10次？

落日映苍穹つ 2023-02-15 05:15 5阅读 0赞

本文介绍了十种不同的名称打印方法。

## 1.循环播放 ##

1.1 For循环

JavaSample1.java

package com.mkyong.samples;
    
    public class JavaSample1 {
    
        public static void main(String[] args) {
    
            for (int i = 0; i < 10; i++) {
                System.out.println("Java ");
            }
    
        }
    
    }

输出量

Java
    Java
    Java
    Java
    Java
    Java
    Java
    Java
    Java
    Java

1.2 While循环

JavaSample2.java

package com.mkyong.samples;
    
    public class JavaSample2 {
    
        public static void main(String[] args) {
    
            int i = 0;
            while (i < 10) {
                System.out.println("Java");
                i++;
            }
    
        }
    
    }

## 2.阅读和打印 ##

本示例将从控制台读取输入并将其打印十次。

JavaSampleReadPrint.java

package com.mkyong.samples;
    
    import java.util.Scanner;
    
    public class JavaSampleReadPrint {
    
        public static void main(String[] args) {
    
            String name = "";
            // read an input and print 10 times
            try (Scanner in = new Scanner(System.in)) {
                System.out.print("Your name: ");
                name = in.nextLine();
            }
    
            for (int i = 0; i < 10; i++) {
                System.out.println(name);
            }
        }
    
    }

输出量

Your name: mkyong
    mkyong
    mkyong
    mkyong
    mkyong
    mkyong
    mkyong
    mkyong
    mkyong
    mkyong
    mkyong

## 3.递归 ##

本示例将使用递归循环。

JavaSampleReadRecursion.java

package com.mkyong.samples;
    
    public class JavaSampleReadRecursion {
    
        public static void main(String[] args) {
    
            print("mkyong", 10);
    
        }
    
        static void print(String name, int times) {
    
            System.out.println(times + ":" + name);
    
            if (times > 1) {
                print(name, times - 1);
            }
        }
    
    }

输出量

10:mkyong
    9:mkyong
    8:mkyong
    7:mkyong
    6:mkyong
    5:mkyong
    4:mkyong
    3:mkyong
    2:mkyong
    1:mkyong

## 4.无循环，无递归 ##

这个例子很有趣，它打印一个字符串1000次而不循环，只是简单的数学运算。

JavaNoLoop.java

package com.mkyong.samples;
    
    public class JavaNoLoop {
    
        public static void main(String[] args) {
    
            String s1 = "Java\n";
            String s3 = s1 + s1 + s1;
            String s10 = s3 + s3 + s3 + s1;
            String s30 = s10 + s10 + s10;
            String s100 = s30 + s30 + s30 + s10;
            String s300 = s100 + s100 + s100;
            String s1000 = s300 + s300 + s300 + s100;
            System.out.print(s1000);
    
        }
    
    }

## 5.字符+字符串和替换 ##

JavaCharStrReplace.java

package com.mkyong.samples;
    
    public class JavaCharStrReplace {
    
        public static void main(String[] args) {
    
            char[] chars = new char[10];
            String str = new String(chars);
            System.out.print(str.replace("\0", "Mkyong\n"));
    
        }
    }

## 6. Java 8字符串联接 ##

6.1 `Collections.nCopies`和`String.join`

JavaStringJoin.java

package com.mkyong.samples;
    
    import java.util.Collections;
    
    public class JavaStringJoinNCopies {
    
        public static void main(String[] args) {
    
            System.out.print(String.join("\n", Collections.nCopies(10, "Mkyong")));
    
        }
    }

6.2 `Arrays.fill`和`String.join`

JavaStringJoinArray.java

package com.mkyong.samples;
    
    import java.util.Arrays;
    
    public class JavaStringJoinArray {
    
        public static void main(String[] args) {
    
            String[] str = new String[10];
            Arrays.fill(str, "Mkyong");
            System.out.println(String.join("\n", str));
    
        }
    }

## 7. Java 8 IntStream.range ##

JavaIntStream.java

package com.mkyong.samples;
    
    import java.util.stream.IntStream;
    
    public class JavaIntStream {
    
        public static void main(String[] args) {
    
            IntStream.range(0,10).forEach(x->System.out.println("Mkyong"));
    
        }
    }

## 8. Java 11重复 ##

Java11Repeat.java

package com.mkyong.samples;
    
    public class Java11Repeat {
    
        public static void main(String[] args) {
    
            String str = "Mkyong\n";
            System.out.println(str.repeat(10));
    
        }
    }

## 参考文献 ##

*  如何从控制台读取输入-Java
 *  [Collections.nCopies JavaDoc][]
 *  [Java 11重复][Java 11]

标签： [回学校][Link 1] [for循环][for] [的Java][Java] [在java 11][java 11] [Java的8][Java_8] [环][Link 2] [递归][Link 3] [重复][Link 4] [扫描][Link 5] [while循环][while]

> 翻译自: [https://mkyong.com/java/java-how-to-print-a-name-10-times/][https_mkyong.com_java_java-how-to-print-a-name-10-times]

[Collections.nCopies JavaDoc]: https://docs.oracle.com/javase/7/docs/api/java/util/Collections.html#nCopies%28int,%20T%29
[Java 11]: https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html#repeat%28int%29
[Link 1]: https://mkyong.com/tag/back-to-school/
[for]: https://mkyong.com/tag/for-loop/
[Java]: https://mkyong.com/tag/java/
[java 11]: https://mkyong.com/tag/java-11/
[Java_8]: https://mkyong.com/tag/java-8/
[Link 2]: https://mkyong.com/tag/loop/
[Link 3]: https://mkyong.com/tag/recursion/
[Link 4]: https://mkyong.com/tag/repeat/
[Link 5]: https://mkyong.com/tag/scanner/
[while]: https://mkyong.com/tag/while-loop/
[https_mkyong.com_java_java-how-to-print-a-name-10-times]: https://mkyong.com/java/java-how-to-print-a-name-10-times/