Java ArrayList搜索元素并输入到Jlist

Question

I want to program a search function of the arraylist . Example I search for Simon, name that contains Simon should show up in the Jlist as shown below. The part I couldnt figure is what is the condition should I check for and what should I be adding.

Screenshot

Main

 public static ArrayList al = new ArrayList();     


    al.add("Alica Wonderland");
    al.add("Bob Jr");
    al.add("Simon Tay");
    al.add("Simon Corbell");
    al.add("Simon Flyman");
    al.add("Simon Jr");
    al.add("David Copper");

Button Action

private void btnSearchActionPerformed(java.awt.event.ActionEvent evt) {                                          
   String value = txtSearch.getText();

    listModel = new DefaultListModel();  
    JList ListAll =  new JList(listModel);

    if(al.contains(value)){
        listModel.addElement(?Name that contains Simon?);
    }
     ListAll.setModel(listModel);  

}  

Answer 1

Try this:

for(int i=0;i<al.size();i++)
    if(al.get(i).contains(value))
        listModel.addElement(al.get(i));

Answer 2

You could iterate over ArrayList elements:

for (Object s : al) {
    if (((String)s).contains("Simon"))
        listModel.addElement(s);
}

PS: You can avoid cast stuff by defining a type for ArrayList :

List<String> al = new ArrayList<String>();

Answer 3

I think you mean something like this:

String name = "Simon";
for(int k = 0; k = yourArraylist.size() - 1; k++) {

    if(yourArraylist.get(k).equals(name)) {.

        your_Jlist.add(name);
        //...

    }

}