在资源的同步互斥中，生产者-消费者的含义是，系统中有很多生产者和消费者同时工作， 生产者负责 生产需要的资源，消费者消耗资源。 当消费者消费资源时，如果资源 不足，则等待。反之当生产者生产资源 时，如果资源已经满足需要，则也要等待该生产。同一时刻只能有一个生产者或消费者进行操作。 package com.qun; public class Theaddemo { class BreadContainer { public static final int maxNum = 600; private int num; public BreadConta...

public class MainActivity extends Activity implements OnClickListener { private TextView tv; private Button bt1; private Button bt2; private Button bt3; private Button bt4; private Button bt5; private Button bt6; private Button bt7; private Button bt8; private Button bt9; pr...

public class MyView extends View{ private int count=0; public MyView(Context context) { super(context); } public void onDraw(Canvas canvas){ int color = 0; switch(count){ case 0: color=Color.BLUE; break; case 1: color=Color.LTGRAY; break; case 2: c...

public class MainActivity extends AppCompatActivity { public Button firstButton; private Button secondButton; private SQLiteDB dbHelper; private final String dbName="helperdb"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedIn...

public class DownMainActivity extends Activity { private static final int PROCESSING = 1; private static final int FAILURE = -1; private EditText pathText; // url地址 private TextView resultView; private Button downloadButton; private Button stopButton; private ProgressBar progressB...

public class MainActivity extends Activity { private Button btn; private ProgressDialog dialog; //进度条 private MyAsyncTasck myAsyncTasck; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layo...

public class MainActivity extends Activity { /*1*** 使用Thread的继承创建进程 ***/ public class MyThread extends Thread{ private int count=0; public void run(){ while(count<100){ count++; Log.i("======run=====", "count="+count); System.out.println("线程"); } } } /************使用run...

package com.example.postvalue; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; public class M...