java中，char类型数组可以直接打印出数据，其他类型打印对应的地址

秒速五厘米 2023-06-07 12:20 76阅读 0赞

下面是java中八种基本类型和1种引用类型定义的数组，并进行打印当前数组操作代码：

package StringStudy;
    
    public class charList { 
        public static void main(String[] args) { 
            char[] charList = new char[]{ '1','2','3','4'};
            System.out.println(charList);
    
            int[] intList = new int[]{ 1,2,3,4};
            System.out.println(intList);
    
            byte[] byteList = new byte[]{ 1,2,3,4};
            System.out.println(byteList);
    
            short[] shortList = new short[]{ 1,2,3,4};
            System.out.println(shortList);
    
            long[] longList = new long[]{ 1L,2L,3L,4L};
            System.out.println(longList);
    
            double[] doubleList = new double[]{ 1.1,2.2,3.3,4.4};
            System.out.println(doubleList);
    
            float[] floatList = new float[]{ 1.1F,2.2F,3.3F,4.4F};
            System.out.println(floatList);
    
            boolean[] booleanList = new boolean[]{ true,false,true,false};
            System.out.println(booleanList);
    
            String[] stringList = new String[]{ "1","2","3","4"};
            System.out.println(stringList);
    
            System.out.println("===========");
            String i = String.valueOf(intList);
            System.out.println(i);
    
            String s = String.valueOf(stringList);
            System.out.println(s);
        }
    }

println操作时，对应执行的源码如下截图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5bWFpc3ls_size_16_color_FFFFFF_t_70]  
执行结果如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5bWFpc3ls_size_16_color_FFFFFF_t_70 1]  
之所以char类型定义的数组能直接打印出数组中的内容，但是其他的只能打印数组的地址，是因为println重载造成的结果；

那么如何获取到其他类型数组的内容而不是仅仅打印地址呢？  
可以使用【Arrays.toString】进行操作，上面的代码改为如下所示：

package StringStudy;
    
    import java.util.Arrays;
    
    public class charList { 
        public static void main(String[] args) { 
            char[] charList = new char[]{ '1','2','3','4'};
            System.out.println(Arrays.toString(charList));
    
            int[] intList = new int[]{ 1,2,3,4};
            System.out.println(Arrays.toString(intList));
    
            byte[] byteList = new byte[]{ 1,2,3,4};
            System.out.println(Arrays.toString(byteList));
    
            short[] shortList = new short[]{ 1,2,3,4};
            System.out.println(Arrays.toString(shortList));
    
            long[] longList = new long[]{ 1L,2L,3L,4L};
            System.out.println(Arrays.toString(longList));
    
            double[] doubleList = new double[]{ 1.1,2.2,3.3,4.4};
            System.out.println(Arrays.toString(doubleList));
    
            float[] floatList = new float[]{ 1.1F,2.2F,3.3F,4.4F};
            System.out.println(Arrays.toString(floatList));
    
            boolean[] booleanList = new boolean[]{ true,false,true,false};
            System.out.println(Arrays.toString(booleanList));
    
            String[] stringList = new String[]{ "1","2","3","4"};
            System.out.println(Arrays.toString(stringList));
    
        }
    }

执行结果如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5bWFpc3ls_size_16_color_FFFFFF_t_70 2]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5bWFpc3ls_size_16_color_FFFFFF_t_70]: /images/20230601/320882d306d04bab88f6b4ce4201cf48.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5bWFpc3ls_size_16_color_FFFFFF_t_70 1]: /images/20230601/e3701611ab6f48e7b1ee4e05e977d93a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5bWFpc3ls_size_16_color_FFFFFF_t_70 2]: /images/20230601/cb677a4e46d14176aa3f6ef934fb29d3.png