SQL query statement parameters are written successfully

public void test(@RequestBody Manager requestManager){        //  This requestManager What's in it is (name=123,password=123)        String sql = "select * from manager where name=? and password=?";        // I want it to be like this  "select * from manager where name=123 and password=123";  But the parameters inside are obtained, not written            }

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Take the answer ：

int name=123;
int password=123;
String sql="select * from manager where name='"+name+"' and password='"+password+"';
Can you try it , I haven't tried , The middle is ' "+ +" '

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