What does the parameter '...' mean in java

First let’s take a look at the method of binding parameters encapsulated in jdbc, as follows:

/**
* 绑定参数
* @param pstmt
* @param os
*/
 
public static void executebindParam(PreparedStatement pstmt,Object ...os){
 
    int len = os.length;
 
    try {
 
        for (int i = 0; i < len; i++) {
 
            pstmt.setObject(i+1, os[i]);
 
        }
 
    } catch (SQLException e) {
 
        e.printStackTrace();
 
    }
 
}

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The analysis is as follows:

Object ...osThis writing method started from Java 5. The Java language supports a new writing method for method parameters, called variable Length parameter list. Indicates that the parameters accepted here are 0 to multiple Object type objects, or an Object[].

Note the format of the variable-length parameter list:

1. There must not be a space between the parameter type and the three dots "..." (Object ...os), Object ...OS will not report an error;

2. Variable length parameter list This parameter must be the last parameter in the parameter list, otherwise an error will be reported.

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