public class StringJoinerLearn1 {
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) {
return String.format("SELECT %s FROM %s",String.join(", ",fields),table);
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iruto-omotteta
public class StringJoinerLearn1 {
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) {
return String.format("SELECT %s FROM %s",String.join(", ",fields),table);
}
}