import java.util.StringJoiner;
public class Main {
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".equals(select) ? "测试成功" : "测试失败");
}
static String buildSelectSql(String table, String[] fields) {
StringJoiner sj = new StringJoiner(", ","SELECT "," FROM " + table);
for(String field: fields) {
sj.add(field);
return sj.toString();
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🐳smlie
import java.util.StringJoiner;
public class Main {
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".equals(select) ? "测试成功" : "测试失败");
}
static String buildSelectSql(String table, String[] fields) {
StringJoiner sj = new StringJoiner(", ","SELECT "," FROM " + table);
for(String field: fields) {
sj.add(field);
}
return sj.toString();
}
}