andrew530520-优快云博客

转载事物的ACID特性

所谓事务，它是一个操作序列，这些操作要么都执行，要么都不执行，它是一个不可分割的工作单位。例如，银行转帐工作：从一个帐号扣款并使另一个帐号增款，这两个操作要么都执行，要么都不执行。　数据库事务必须具备ACID特性，ACID是Atomic（原子性）、Consistency（一致性）、Isolation（隔离性）和Durability（持久性）的英文缩写。　原子性：指整个数据库事...

2016-06-03 08:20:00 225

转载 5.27作业

package com.hanqi.myapplication; import android.content.res.AssetManager; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import andr...

2016-05-28 09:52:00 132

转载 5.25作业

//mainActivity package com.hanqi.myapplication; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; impor...

2016-05-27 09:38:00 131

转载 sp存储

package com.hanqi; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view...

2016-05-24 10:04:00 188

转载作业

package com.hanqi.testapp2; import android.content.DialogInterface; import android.os.Bundle; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; ...

2016-05-23 10:05:00 126

转载 GridView

package com.hanqi.testapp2; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.view.ViewGroup; import android.widget.Base...

2016-05-21 10:37:00 88

转载 ListView

package com.hanqi.testapp2; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.widget.ListView; import android.widget.SimpleAdapter; import java....

2016-05-18 10:39:00 99

转载无

package com.hanqi.testapp2; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.view.View; im...

2016-05-17 14:06:00 100

转载 android拨打电话

package com.hanqi.test; package com.hanqi.test; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; impor...

2016-05-14 09:51:00 85

转载 Thread类

package org.hanqi.thread; public class test04 extends Thread { public void run(){ for(int i=0;i<10;i++){ try { Thread.sleep(1000); } catch (InterruptedException e) { // TODO Auto-g...

2016-03-15 15:45:00 98

转载 Map类

package com.hanqi; import java.util.*; public class test07 { public static void main(String[] args) { Map<String,String> Emp=new HashMap<String,String>(); Emp.put("005...

2016-03-12 08:28:00 137

转载父类和子类

public class Father { public void FF1(){ System.out.println("我是FF1"); } public void FF2(){ System.out.println("我是FF2"); }} public class Son extends Father { public void FF2(){ System.out.prin...

2016-03-11 08:34:00 266

转载 People类

package com.hanqi; public class shuiGuo { private String color; private double price; public String getColor() { return color; } public void setColor(String color) { this.color = color...

2016-03-08 08:36:00 276

转载水果类

package com.hanqi; public class shuiGuo { private String color; private double price; public String getColor() { return color; } public void setColor(String color) { this.color = co...

2016-03-08 08:35:00 262

转载矩形的面积

package com.hanqi;class juXing{ int chang; int kuan; public juXing(int chang,int kuan){ this.chang=chang; this.kuan=kuan; } public double mianJi(){ return chang*kuan; ...

2016-03-05 08:42:00 122

转载猜数字

package com.hanqi; import java.util.Scanner; public class test02 { public static void main(String[] args) { System.out.println("请您的数字："); Scanner sc=new Scanner(System.in); int a=...

2016-03-02 10:54:00 144

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