THE PACKAGE JAVA.LANG

java.lang.Runtime

20.16

20.16 The Class

java.lang.Runtime

public class Runtime {

public static Runtime getRuntime();

public void exit(int status) throws SecurityException;

public Process exec(String command) throws

IOException, SecurityException, IndexOutOfBoundsException;

public Process exec(String command, String envp[]) throws

IOException, SecurityException, IndexOutOfBoundsException;

public Process exec(String cmdarray[]) throws

IOException, SecurityException, IndexOutOfBoundsException;

public Process exec(String cmdarray[], String envp[]) throws

IOException, SecurityException, IndexOutOfBoundsException;

public long totalMemory();

public long freeMemory();

public void gc();

public void runFinalization();

public void traceInstructions(boolean on);

public void traceMethodCalls(boolean on);

public void load(String filename)

throws SecurityException, UnsatisfiedLinkError;

public void loadLibrary(String libname)

throws SecurityException, UnsatisfiedLinkError;

public InputStream getLocalizedInputStream(InputStream in);

public OutputStream

getLocalizedOutputStream(OutputStream out);

}

20.16.1

public static Runtime getRuntime()

This method returns the current

Runtime

 object. Most of the methods of class

Runtime

 are instance methods and must be invoked with respect to the current

runtime object.

20.16.2

public void exit(int status)

throws SecurityException

First, if there is a security manager, its

checkExit

 method ( 20.17.13) is called

with the

status

 value as its argument.

This method terminates the currently running Java Virtual Machine. The argu 

ment serves as a status code; by convention, a nonzero status code indicates

abnormal termination.

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