多线程操作小demo

一直对多线程操作一直半解,在网上看了很多贴,写个小demo算是小小的收获吧:-)




public class TestThread {
private static int number = 1;
static Thread NumberThread;
static Thread MonitorThread;


public static void main(String[] args){

NumberThread = new Thread(new Runnable() {
public void run() {
while(true){
try {
number++;
System.out.println("this is the number: "+number);

} catch (Exception e) {
e.printStackTrace();
return;
}

}

}

});

MonitorThread = new Thread(new Runnable() {
public void run() {
System.out.println("Thread MonitorThread");
synchronized(this) { 
while(true){
try {
if(number > 50){
System.out.println("number is > 50 now");
NumberThread.stop();
break;
}
} catch (Exception e) {
e.printStackTrace();
return;
}

}

}


}
});
NumberThread.start();
MonitorThread.start();

}

}


运行结果如下:

this is the number: 2
Thread MonitorThread
this is the number: 3
this is the number: 4
this is the number: 5
this is the number: 6
this is the number: 7
this is the number: 8
this is the number: 9
this is the number: 10
this is the number: 11
this is the number: 12
this is the number: 13
this is the number: 14
this is the number: 15
this is the number: 16
this is the number: 17
this is the number: 18
this is the number: 19
this is the number: 20
this is the number: 21
this is the number: 22
this is the number: 23
this is the number: 24
this is the number: 25
this is the number: 26
this is the number: 27
this is the number: 28
this is the number: 29
this is the number: 30
this is the number: 31
this is the number: 32
this is the number: 33
this is the number: 34
this is the number: 35
this is the number: 36
this is the number: 37
this is the number: 38
this is the number: 39
this is the number: 40
this is the number: 41
this is the number: 42
this is the number: 43
this is the number: 44
this is the number: 45
this is the number: 46
this is the number: 47
this is the number: 48
this is the number: 49
this is the number: 50
number is > 50 now
this is the number: 51


一、综合实战—使用极轴追踪方式绘制信号灯 实战目标:利用对象捕捉追踪和极轴追踪功能创建信号灯图形 技术要点:结合两种追踪方式实现精确绘图,适用于工程制图中需要精确定位的场景 1. 切换至AutoCAD 操作步骤: 启动AutoCAD 2016软件 打开随书光盘中的素材文件 确认工作空间为"草图与注释"模式 2. 绘图设置 1)草图设置对话框 打开方式:通过"工具→绘图设置"菜单命令 功能定位:该对话框包含捕捉、追踪等核心绘图辅助功能设置 2)对象捕捉设置 关键配置: 启用对象捕捉(F3快捷键) 启用对象捕捉追踪(F11快捷键) 勾选端点、中心、圆心、象限点等常用捕捉模式 追踪原理:命令执行时悬停光标可显示追踪矢量,再次悬停可停止追踪 3)极轴追踪设置 参数设置: 启用极轴追踪功能 设置角度增量为45度 确认后退出对话框 3. 绘制信号灯 1)绘制圆形 执行命令:"绘图→圆→圆心、半径"命令 绘制过程: 使用对象捕捉追踪定位矩形中心作为圆心 输入半径值30并按Enter确认 通过象限点捕捉确保圆形位置准确 2)绘制直线 操作要点: 选择"绘图→直线"命令 捕捉矩形上边中点作为起点 捕捉圆的上象限点作为终点 按Enter结束当前直线命令 重复技巧: 按Enter可重复最近使用的直线命令 通过圆心捕捉和极轴追踪绘制放射状直线 最终形成完整的信号灯指示图案 3)完成绘制 验证要点: 检查所有直线是否准确连接圆心和象限点 确认极轴追踪的45度增量是否体现 保存绘图文件(快捷键Ctrl+S)
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值