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8263561: Re-examine uses of LinkedList

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Reviewed-by: redestad
This commit is contained in:
Sergey Tsypanov 2021-08-02 12:50:38 +00:00 • committed by Claes Redestad
parent 6a3f8343bc
commit 249d641889
9 changed files with 45 additions and 47 deletions
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26
src/java.base/unix/classes/sun/net/dns/ResolverConfigurationImpl.java
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@ -26,7 +26,7 @@
package sun.net.dns;
import java.util.List;
import java.util.LinkedList;
import java.util.ArrayList;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.io.FileReader;
@ -56,11 +56,11 @@ public class ResolverConfigurationImpl
// Parse /etc/resolv.conf to get the values for a particular
// keyword.
//
private LinkedList<String> resolvconf(String keyword,
private ArrayList<String> resolvconf(String keyword,
int maxperkeyword,
int maxkeywords)
{
LinkedList<String> ll = new LinkedList<>();
ArrayList<String> ll = new ArrayList<>();
try {
BufferedReader in =
@ -111,8 +111,8 @@ public class ResolverConfigurationImpl
return ll;
}
private LinkedList<String> searchlist;
private LinkedList<String> nameservers;
private ArrayList<String> searchlist;
private ArrayList<String> nameservers;
// Load DNS configuration from OS
@ -133,7 +133,7 @@ public class ResolverConfigurationImpl
nameservers =
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<>() {
public LinkedList<String> run() {
public ArrayList<String> run() {
// typically MAXNS is 3 but we've picked 5 here
// to allow for additional servers if required.
return resolvconf("nameserver", 1, 5);
@ -151,16 +151,16 @@ public class ResolverConfigurationImpl
// obtain search list or local domain
@SuppressWarnings("removal")
private LinkedList<String> getSearchList() {
private ArrayList<String> getSearchList() {
LinkedList<String> sl;
ArrayList<String> sl;
// first try the search keyword in /etc/resolv.conf
sl = java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<>() {
public LinkedList<String> run() {
LinkedList<String> ll;
public ArrayList<String> run() {
ArrayList<String> ll;
// first try search keyword (max 6 domains)
ll = resolvconf("search", 6, 1);
@ -183,8 +183,8 @@ public class ResolverConfigurationImpl
sl = java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<>() {
public LinkedList<String> run() {
LinkedList<String> ll;
public ArrayList<String> run() {
ArrayList<String> ll;
ll = resolvconf("domain", 1, 1);
if (ll.size() > 0) {
@ -201,7 +201,7 @@ public class ResolverConfigurationImpl
// no local domain so try fallback (RPC) domain or
// hostName
sl = new LinkedList<>();
sl = new ArrayList<>();
String domain = fallbackDomain0();
if (domain != null && !domain.isEmpty()) {
sl.add(domain);