Hi,

I am having trouble with the following code, it doesn't save anything or load anything.

Can someone point me in the right direction.

Database Class

package Testing;
 
import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.FileInputStream;
import java.io.FileOutputStream;
 
public class DataBase {
    /**
     * The linked list of Tests
     */
    private Tests tests;
 
    /*
     * The name of the XML file that contains the tests data used to read the saved data
     */
    private final String TESTSFILE="Tests.xml";
 
 
    public DataBase(){
        boolean readOK=true;
        tests=new Tests();
        readOK=true;
        System.out.println("Opening");
        readOK = true;
 
        try{
            XMLDecoder decoder = new XMLDecoder(new FileInputStream(TESTSFILE));
             tests =(Tests) decoder.readObject();
            decoder.close();       
        }catch (Exception e){
            System.out.println(e.toString());
            System.out.println("FileNotFound");
            readOK=false;
        }
        if(!readOK){
 
        }else{
        System.out.println("Tests Read In");
        }
 
    }
 
    public boolean saveSystem(){
        boolean savedOK=true;
        try{
            XMLEncoder encoder = new XMLEncoder(new FileOutputStream(TESTSFILE));
            encoder.writeObject(tests);
            encoder.close();
        }catch (Exception e){
 
        }
 
        return savedOK;
    }
 
    public boolean addTest(Test test){
        tests.add(test);
        return true;
    }
 
    public Test[] getAllTests(){
        Test[] list = tests.getAllTests();
        return list;
    }
 
}
Test Class
 
package Testing;
 
public class Test {
 
    private String firstPara;
 
    private String lastPara;
 
    public void setFirstPara(String firstPara) {
        this.firstPara = firstPara;
    }
 
    public String getFirstPara() {
        return this.firstPara;
    }
 
    public void setLastPara(String lastPara) {
        this.lastPara = lastPara;
    }
 
    public String getLastPara() {
        return this.lastPara;
    }
 
    public String toString(){
        String result = "";
        result = result + firstPara + ", ";
        result = result + lastPara + ", ";
 
        return result;
    }
 
}
Tests Class
 
import java.util.LinkedList;
 
public class Tests {
 
    public LinkedList<Test> tests= new LinkedList<Test>();
 
    public Tests(){
 
    }
 
 
    public void add(Test test){
        tests.add(test);
    }
    public void delete(Test test){
        tests.remove(test);
    }
    public Test[] getAllTests() {
        int size = tests.size();
        Test[] tests = new Test[size];
        if(size>0){
            for(int i = 0; i< size;i++){
                tests[i]=this.tests.get(i);
            }
        }
        return tests;
    }
 
}
Start Class - Used to run the system
 
package Testing;
 
public class Start {
 
    public static void main(String[] args){
        Test test = new Test();
        DataBase mySystem = new DataBase();
        Test[] tests;
 
        test.setFirstPara("Test1");
        test.setLastPara("Test2");
 
        mySystem.addTest(test);
 
        tests = mySystem.getAllTests();
        for(int i=0; i < tests.length-1;i++){
            System.out.println(tests[i].toString());
        }
 
        if(!mySystem.saveSystem()){
            System.out.println("Failed to save");
        }else{
            System.out.println("Saved");
        }  
 
    }
}
Everything seems to work except for the saving/loading.

Thanks for your time.