I**A
发帖数: 2345 | 1 下面的code，run 了gc之后区别还挺大的。。请教大家，gc都free了哪些memory?
thanks!
public class MemTest {
public static void main(String[] args){
Runtime rt = Runtime.getRuntime();
long wasFree, isFree;
isFree = rt.freeMemory();
do{
wasFree = isFree;
System.out.println("before " + isFree ); //here it is 4991136
rt.runFinalization();
rt.gc();
isFree = rt.freeMemory();
System.out.p | m******t
发帖数: 2416 | 2
Mostly allocated during the two System.out.println calls.
【在 I**A 的大作中提到】
: 下面的code，run 了gc之后区别还挺大的。。请教大家，gc都free了哪些memory?
: thanks!
: public class MemTest {
: public static void main(String[] args){
: Runtime rt = Runtime.getRuntime();
: long wasFree, isFree;
: isFree = rt.freeMemory();
: do{
: wasFree = isFree;
: System.out.println("before " + isFree ); //here it is 4991136
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