通过java运行终端命令
我必须从java程序在终端中执行两个命令。下面是我正在使用的java代码:通过java运行终端命令,java,linux,terminal,command,Java,Linux,Terminal,Command,我必须从java程序在终端中执行两个命令。下面是我正在使用的java代码: import java.io.BufferedReader; import java.io.InputStreamReader; public class Runterminal { public static void main(String[] args) { Process proc; Process procRun; String compileCommand = "aarch64-linux-g
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Runterminal {
public static void main(String[] args) {
Process proc;
Process procRun;
String compileCommand = "aarch64-linux-g++ -std=c++14 hello.cpp";
String runCommand = "aarch64-linux-objdump -d a.out";
try{
proc = Runtime.getRuntime().exec(compileCommand);
procRun = Runtime.getRuntime().exec(runCommand);
// Read the output
BufferedReader reader =
new BufferedReader(new InputStreamReader(proc.getInputStream()));
String line = "";
while((line = reader.readLine()) != null) {
System.out.print(line + "\n");
}
proc.waitFor();
BufferedReader readero =
new BufferedReader(new InputStreamReader(procRun.getInputStream()));
String lineo = "";
while((lineo = readero.readLine()) != null) {
System.out.print(lineo + "\n");
}
procRun.waitFor();
}
catch(Exception e)
{
System.out.println("Exception occurred "+e);
}
}
}
我的hello.cpp
文件存储在主目录中。当我编译java程序时,它会被编译,但在运行它时,它会抛出异常。下面是我得到的输出:
Exception occurred java.io.IOException: Cannot run program "aarch64-
linux-g++": error=2, No such file or directory
尝试在代码中使用以下行替换
String compileCommand = "g++ -std=c++14 hello.cpp";
String runCommand = "./a.out";
并将
.cpp
文件保存在.class
文件所在的同一目录中。将hello.cpp
存储在.class文件所在的同一目录中。这解决了异常,但我无法看到输出。是否有什么我应该做的不同,因为第二个命令应该在终端中生成输出。