Word reverse (java)

How to reverse a string consisting of a string of word it? Such as: "we go to school" become "school to go we" java code to achieve:

public  static String Rever (String str) {
         // write there is a problem is if there are spaces in the string rearmost split () method is not the last minute out of space. A space in front of the string does not matter 
        the StringBuilder SB = new new the StringBuilder (); // for receiving the MO-table character string 
        String [] = str.split strings ( ""); // on spaces Split
         // iterate 
        for ( int I = strings.length -. 1; I> = 0; i-- ) {
             IF (I = 0! ) { 
                sb.append (strings [I] + "" ); 
            } the else { 
                sb.append (strings [I]); 
            } 
        }
        return sb.toString();
    }

If the string-word there are some '', '' how to handle it? Such as: ". We go, to school" becomes ".school to, go we" java achieve the following:

public  static String Rever (String STR) { 
    the StringBuilder tempStr = new new the StringBuilder (); // temporarily storing strings 
    the StringBuilder goalStr = new new the StringBuilder (); // finally stored character string 
    for ( int I = str.length () -. 1; I> = 0; I-2019-07-142019-07-142019-07-1410: 27: 59- ) {
         char C = str.charAt (I);
         // process the special string if there are other special characters can house if the condition in which 
        if (C == '' || C == ',' || C == ''. ) { 
            goalStr.append (tempStr); // temporarily stored into a target string stored in the character string 
            goalStr.append (C); //The special characters into a target string 
            tempStr.delete (0, tempStr.length ()); // Clear the temporary storage until the next string 
        } the else { 
            tempStr.insert ( 0, C); // non-special character temporary string into the middle to complete the stitching together of words into the target string 
        } 
    } 
    // prevent the front there are no special characters in front of a word will not fit into the 
    IF (! tempStr.equals ( "" )) { 
        goalStr.append ( tempStr); 
    } 
    return goalStr.toString (); 
}