为什么会出现“线程中的异常”AWT-EventQueue-0“java.lang.OutOfMemoryError: Java heap space”错误？

Question

Why do I get a Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space because of objects[i]=rs.getObject(i+1); ? There are about 10,000 records with about 4,000 characters per record.

        String[] tableColumnsName = {idString, dateEnteredString, entryString, operatorString, licenseNoString, lastModifiedString};
        DefaultTableModel aModel = (DefaultTableModel) logEntryTable.getModel();
        aModel.setColumnIdentifiers(tableColumnsName);

        ResultSetMetaData rsmd;
        try {
            rsmd = rs.getMetaData();

            int colNo = rsmd.getColumnCount();
            while(rs.next()){
                Object[] objects = new Object[colNo];
                for(int i=0;i<colNo;i++){
                    objects[i]=rs.getObject(i+1);
                }
                aModel.addRow(objects);
            }
            logEntryTable.setModel(aModel);

            logEntryTable.getColumnModel().getColumn(0).setMaxWidth(30);

            rs.close();

        } catch (SQLException e) {
            e.printStackTrace();
            showCantConnectErrorDialog();
        }

Answer 1

Your JVM has run out of memory. Potentially when JVM is short on memory OutOfMemoryError may appear in any place in the code that allocates memory. Try increasing your heap size using -Xmx parameter .

Answer 2

我同意 ^^ 您需要增加堆大小，或者如果这不可能，请减少所有内容以尽可能提高空间效率。