Convert string type in java to array case

This depends on your specific needs. If it is a delimiter such as "a,b,c"; just divide it directly.

String string = "a,b,c";

String [] stringArr= (","); //Note that the separator needs to be translated...

If it is a string like "abc", it will be

String string = "abc" ;

char [] stringArr = (); //Note that the return value is a char array

If you want to return a byte array, just use the getBytes method directly, it will be OK~~

String string = "abc" ;

byte [] stringArr = ();

At the same time, the front desk can also pass the parameters to the background by splicing. You can write "a, b, c" in this way to convert it into an array form. If splicing it into "["+a+b+"]", you need to do related operations in the background:

Method 1:

String demo = "[a,b,c]";
String demosub = (1,()-1);
String demoArray[] = (",");
List<String> demoList = (demoArray);

Method 2:

("[a,b,c]").get(0)

Supplementary knowledge:Java converts String-type strings into int-type (or int-type array)

Convert to int array code implementation

  String str = "6921168509256";
  int[] arr = new int[()];
  for (int i = 0; i &lt; (); i++) {
    arr[i] = ((i, i + 1));//substring is to find the substring that contains the start position, not the end position, and the previous one to the end position  }
  for(int i:arr)//Output array arr    (i+" ");

Convert to int-type code implementation

  String str = "69211685";
  int a = (str);
  (a);

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