问java.lang.IndexOutOfBoundsException in for each循环

EN

public String codeGeneration() { 

    ArrayList<String> dispatchTable = new ArrayList<String>();

    if(superEntry != null) { 
        ArrayList<String> superDispatchTable = getDispatchTable(superEntry.getOffset());

        for(int i = 0; i < superDispatchTable.size(); i++) {
            dispatchTable.add(i, superDispatchTable.get(i));
        }
    }

    String methodsCode = "";

    for(Node m : methods) {
        methodsCode+=m.codeGeneration();
        MethodNode mnode = (MethodNode) m;
        dispatchTable.add(mnode.getOffset(), mnode.getLabel());
    }
    addDispatchTable(dispatchTable);

    String codeDT = "";
    for(String s : dispatchTable) {
        codeDT+= "push " + s + "\n"
                + "lhp\n"
                + "sw\n" 
                + "lhp\n"
                + "push 1\n"
                + "add\n"
                + "shp\n"; 
    }

    return "lhp\n"
    + codeDT;
}