在Java中，我们可以使用ProcessBuilder或Runtime.getRuntime().exec执行外部shell命令：

1. ProcessBuilder

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class ProcessBuilderExample1 {

    public static void main(String[] args) {

        ProcessBuilder processBuilder = new ProcessBuilder();
        // Windows
        processBuilder.command("cmd.exe", "/c", "ping -n 3 bing.com");

        try {

            Process process = processBuilder.start();

            BufferedReader reader =
                    new BufferedReader(new InputStreamReader(process.getInputStream()));

            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }

            int exitCode = process.waitFor();
            System.out.println("\nExited with error code : " + exitCode);

        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

}

2. Runtime.getRuntime().exec()

 

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;


public class ExecuteShellComand {


    public static void main(String[] args) {

    	 try {

    	        // -- Linux --
    	        
    	        // Run a shell command
    	        // Process process = Runtime.getRuntime().exec("ls /home/user/");

    	        // Run a shell script
    	        // Process process = Runtime.getRuntime().exec("path/to/hello.sh");

    	        // -- Windows --
    	        
    	        // Run a command
    	        //Process process = Runtime.getRuntime().exec("cmd /c dir C:\\Users\\Administrator");

    	        //Run a bat file
    	        Process process = Runtime.getRuntime().exec(
    	                "cmd /c hello.bat", null, new File("C:\\Users\\Administrator\\"));

    	        StringBuilder output = new StringBuilder();

    	        BufferedReader reader = new BufferedReader(
    	                new InputStreamReader(process.getInputStream()));

    	        String line;
    	        while ((line = reader.readLine()) != null) {
    	            output.append(line + "\n");
    	        }

    	        int exitVal = process.waitFor();
    	        if (exitVal == 0) {
    	            System.out.println("Success!");
    	            System.out.println(output);
    	            System.exit(0);
    	        } else {
    	            //abnormal...
    	        }

    	    } catch (IOException e) {
    	        e.printStackTrace();
    	    } catch (InterruptedException e) {
    	        e.printStackTrace();
    	    }

    	}

    }