测试脚本 test.sh

# 定义一个数字类型变量num,初始值为0
declare -i num=0
# 定义变量Index,从1到100循环
for Index in {1..100};do
# 每次将Index的值加到num上,之后休眠100毫秒
        let num+=$Index
        sleep 0.1
done
# 屏幕输出结果 $1 为脚本后携带的参数
echo "[$1] num is $num"

Java执行脚本

System.out.println("start exec 1");
Process exec = Runtime.getRuntime().exec("/bin/bash test.sh t1");
System.out.println("running 1");
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(exec.getInputStream()));
String line = null;
while ((line = bufferedReader.readLine()) != null) {
    System.out.println(line);
}
System.out.println("end 1");

执行结果

start exec 1
running 1
[t1] num is 5050
end 1