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StringJoiner-交作业

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package practise02;

import java.util.StringJoiner;

public class Exe02 {

public static void main(String[] args) {

String[] fields = { "name", "position", "salary" };

String table = "employee";

String select = buildSelectSql(table, fields);

System.out.println(select);

System.out.println("SELECT name, position, salary FROM employee");

System.out.println("SELECT name, position, salary FROM employee".equals(select) ? "测试成功" : "测试失败");

}

static String buildSelectSql(String table, String[] fields) {

// TODO:

StringJoiner sb = new StringJoiner(", ", "SELECT ", " FROM " + table);

for (String field : fields) {

sb.add(field);

}

return sb.toString();

}

}


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