使用Java实现Windows自带计算器（超简单）

import java.io.IOException;

public class Calc {
	public static void main(String[] args) {
		String osName = System.getProperty("os.name");
		System.out.println(osName);
		StringBuffer systempathBuff = new StringBuffer("");
		if (osName.indexOf("Windows") > -1) {
			systempathBuff.append("c:\\WINDOWS\\system32\\cmd.exe");
		} else if (osName.indexOf("NT") > -1) {
			systempathBuff.append("c:\\WINDOWS\\command.exe");
		}
		String[] cmd = new String[2];
		cmd[0] = systempathBuff.toString();
		cmd[1] = "/c calc.exe";// 计算器的绝对路径
		System.out.println(cmd);
		try {
			@SuppressWarnings("unused")
			Process p = Runtime.getRuntime().exec(cmd);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}