Example usage for java.lang Runtime getRuntime

Introduction

In this page you can find the example usage for java.lang Runtime getRuntime.

Prototype

public static Runtime getRuntime()

Source Link

Document

Returns the runtime object associated with the current Java application.

Usage

From source file:Main.java

public static void runtimeGC() {
    Runtime.getRuntime().gc();
}

From source file:Main.java

public static long getUsedMemorySize() {

    long freeSize = 0L;
    long totalSize = 0L;
    long usedSize = -1L;
    try {//from www . j a va 2  s.  c o m
        Runtime info = Runtime.getRuntime();
        freeSize = info.freeMemory();
        totalSize = info.totalMemory();
        usedSize = totalSize - freeSize;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return usedSize;

}

From source file:Main.java

public static long getUsedMemorySize() {

    long freeSize = 0L;
    long totalSize = 0L;
    long usedSize = -1L;
    try {/*w  w  w .j a v  a  2 s  .c  o  m*/
        Runtime info = Runtime.getRuntime();
        freeSize = info.freeMemory();
        totalSize = info.totalMemory();
        usedSize = totalSize - freeSize;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return usedSize / 1048576L;

}

From source file:Main.java

public static void runAsRoot(String[] commands) throws IOException, InterruptedException {
    Process p = Runtime.getRuntime().exec("su");
    DataOutputStream os = new DataOutputStream(p.getOutputStream());
    for (String cmd : commands) {
        os.writeBytes(cmd + "\n");
    }//  w  w w .jav  a  2  s.  c  om
    os.writeBytes("exit\n");
    os.flush();
    os.close();
    p.waitFor();
}

From source file:Main.java

public static void killProcess(int pid) {
    Process sh = null;/*from w  w w  .j a  va 2 s  .  co m*/
    DataOutputStream os = null;
    try {
        sh = Runtime.getRuntime().exec("su");
        os = new DataOutputStream(sh.getOutputStream());
        final String Command = "kill -9 " + pid + "\n";
        os.writeBytes(Command);
        os.flush();
        sh.waitFor();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void clearResource(String targetDir) {
    String[] str = { "rm", "-r", targetDir };

    try {/*from  w ww  .  j  av  a2s . co m*/
        Process ps = Runtime.getRuntime().exec(str);
        try {
            ps.waitFor();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static long getPhysicalMemorySize() {

    long freeSize = 0L;
    long totalSize = 0L;
    long usedSize = -1L;
    try {/*from   w  w  w  .ja  v a  2s. c o m*/
        Runtime info = Runtime.getRuntime();
        freeSize = info.freeMemory();
        totalSize = info.totalMemory();
        usedSize = totalSize - freeSize;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return totalSize / 1048576L;

}

From source file:Main.java

public static void forceStopAPK(String pkgName) {
    Process sh = null;/*from   w  w w. java  2s  .  c  o m*/
    DataOutputStream os = null;
    try {
        sh = Runtime.getRuntime().exec("su");
        os = new DataOutputStream(sh.getOutputStream());
        final String Command = "am force-stop" + pkgName;
        os.writeBytes(Command);
        os.flush();
        sh.waitFor();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

private static boolean checkRootMethod3() {
    Process process = null;//from  w  w w .ja v  a  2 s .c  o  m
    try {
        process = Runtime.getRuntime().exec(new String[] { "/system/xbin/which", "su" });
        BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
        if (in.readLine() != null)
            return true;
        return false;
    } catch (Throwable t) {
        return false;
    } finally {
        if (process != null)
            process.destroy();
    }
}

From source file:Main.java

public static String dumpFile(String filename) {
    String line = "";
    try {/*from  www  .  j a v  a2 s  .  c  o m*/
        Process ifc = Runtime.getRuntime().exec("cat " + filename);
        BufferedReader bis = new BufferedReader(new InputStreamReader(ifc.getInputStream()));
        line = bis.readLine();
        ifc.destroy();

    } catch (java.io.IOException e) {
        return new String("");
    }

    return line;
}