Question

不确定为什么会发生这种情况，我尝试删除“公共”，我仍然会收到100万其他错误

public class Script0 {
    public static void main() {   
    int[] score = new int[ - 0];

   public Keying(Display d) {
   d.f.addKeyListener(new KeyAdapter() {
    public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_S) {
            score ++;
        }
        if (e.getKeyCode() == KeyEvent.VK_META) {
            score--;
        }
        }
    }
  }
 }
}

Answer 1

关闭<div style="text-align: right;"> Text here </div> <div style="text-align: center;"> <button> Button </button> </div> <div>   </div> div{ float: left; width: 33.333%; height: auto; overflow: auto; background-color: #FFF; }方法的括号，尝试添加getline()数组Booting: production /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: already initialized constant ActiveRecord::Base::OrmAdapter /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: previous definition of OrmAdapter was here /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: already initialized constant ActiveRecord::Base::OrmAdapter /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: previous definition of OrmAdapter was here /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/connection_adapters/connection_specification.rb:171:in `spec': database configuration does not specify adapter (ActiveRecord::AdapterNotSpecified) from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/connection_handling.rb:50:in `establish_connection' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/railtie.rb:120:in `block (2 levels) in <class:Railtie>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:44:in `each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/base.rb:316:in `<module:ActiveRecord>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/base.rb:26:in `<top (required)>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/devise-3.5.2/lib/devise/orm/active_record.rb:3:in `<top (required)>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `require' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `block in require' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in `require' from /Users/yihuazhang/Projects/learnabli/formula/config/initializers/devise.rb:24:in `block in <top (required)>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/devise-3.5.2/lib/devise.rb:278:in `setup' from /Users/yihuazhang/Projects/learnabli/formula/config/initializers/devise.rb:3:in `<top (required)>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `block in load' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:652:in `block in load_config_initializer' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/notifications.rb:166:in `instrument' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:651:in `load_config_initializer' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:616:in `block (2 levels) in <class:Engine>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:615:in `each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/engine.rb:615:in `block in <class:Engine>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:30:in `instance_exec' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:30:in `run' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:55:in `block in run_initializers' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:420:in `block (2 levels) in each_strongly_connected_component_from' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:419:in `block in each_strongly_connected_component_from' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:44:in `each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:44:in `tsort_each_child' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:413:in `call' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:413:in `each_strongly_connected_component_from' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:345:in `each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:345:in `call' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/initializable.rb:54:in `run_initializers' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/application.rb:352:in `initialize!' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/derailed_benchmarks-1.3.0/lib/derailed_benchmarks/tasks.rb:26:in `block (2 levels) in <top (required)>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:240:in `call' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:240:in `block in execute' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:235:in `each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:235:in `execute' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:179:in `block in invoke_with_call_chain' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:172:in `invoke_with_call_chain' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:165:in `invoke' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/derailed_benchmarks-1.3.0/lib/derailed_benchmarks/tasks.rb:60:in `block (2 levels) in <top (required)>' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:240:in `call' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:240:in `block in execute' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:235:in `each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:235:in `execute' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:179:in `block in invoke_with_call_chain' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:172:in `invoke_with_call_chain' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:201:in `block in invoke_prerequisites' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:199:in `each' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:199:in `invoke_prerequisites' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:178:in `block in invoke_with_call_chain' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:172:in `invoke_with_call_chain' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rake/task.rb:165:in `invoke' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/derailed_benchmarks-1.3.0/bin/derailed:41:in `exec' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/command.rb:27:in `run' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor.rb:359:in `dispatch' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/base.rb:440:in `start' from /Users/yihuazhang/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/derailed_benchmarks-1.3.0/bin/derailed:92:in `<top (required)>' from /Users/yihuazhang/.rbenv/versions/2.2.2/bin/derailed:23:in `load' from /Users/yihuazhang/.rbenv/versions/2.2.2/bin/derailed:23:in `<main>'，如下所示：

main

尝试添加length方法的返回值或使用score，如下所示：

   public static void main(String[] args) {   
    int[] score = new int[some_length];
    }

创建一个没有字段用法的构造函数，如下所示：

Keying

非法表达的开始？ BlueJ的

1 个答案: