我从char中获得了大量内存泄漏。这不是我的写作，我不擅长清理记忆，所以帮助将不胜感激。这个类使用char，所以我将从它开始。
package server.util;
import java.text.NumberFormat;
import org.jboss.netty.buffer.ChannelBuffer;
public class Misc {
public static String getRS2String(final ChannelBuffer buf) {
final StringBuilder bldr = new StringBuilder();
byte b;
while (buf.readable() && (b = buf.readByte()) != 10)
bldr.append((char) b);
return bldr.toString();
}
public static double randomDouble(double min, double max) {
return (Math.random() * (max - min) + min);
}
public static String formatPlayerName(String str) {
str = ucFirst(str);
str.replace("_", " ");
return str;
}
public static int getCurrentHP(int i, int i1, int i2) {
double x = (double) i / (double) i1;
return (int) Math.round(x * i2);
}
public static String removeSpaces(String s) {
return s.replace(" ", "");
}
public static String capitalize(String s) {
for (int i = 0; i < s.length(); i++) {
if (i == 0) {
s = String.format("%s%s", Character.toUpperCase(s.charAt(0)),
s.substring(1));
}
if (!Character.isLetterOrDigit(s.charAt(i))) {
if (i + 1 < s.length()) {
s = String.format("%s%s%s", s.subSequence(0, i + 1),
Character.toUpperCase(s.charAt(i + 1)),
s.substring(i + 2));
}
}
}
return s;
}
public static boolean goodDistance(int objectX, int objectY, int playerX,
int playerY, int distance) {
return ((objectX - playerX <= distance && objectX - playerX >= -distance) && (objectY
- playerY <= distance && objectY - playerY >= -distance));
}
public static int distanceToPoint(int pointX, int pointY, int pointX2, int pointY2) {
return (int) Math.sqrt(Math.pow(pointX2 - pointX, 2)
+ Math.pow(pointY2 - pointY, 2));
}
public static String longToReportPlayerName(long l) {
int i = 0;
final char ac[] = new char[12];
while (l != 0L) {
final long l1 = l;
l /= 37L;
ac[11 - i++] = Misc.playerNameXlateTable[(int) (l1 - l * 37L)];
}
return new String(ac, 12 - i, i);
}
public static String longToPlayerName(long l) {
int i = 0;
char ac[] = new char[12];
while (l != 0L) {
long l1 = l;
l /= 37L;
ac[11 - i++] = xlateTable[(int) (l1 - l * 37L)];
}
return new String(ac, 12 - i, i);
}
public static final char playerNameXlateTable[] = { '_', 'a', 'b', 'c',
'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p',
'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2',
'3', '4', '5', '6', '7', '8', '9', '[', ']', '/', '-', ' ' };
public static String longToPlayerName2(long l) {
int i = 0;
char ac[] = new char[99];
while (l != 0L) {
long l1 = l;
l /= 37L;
ac[11 - i++] = playerNameXlateTable[(int) (l1 - l * 37L)];
}
return new String(ac, 12 - i, i);
}
public static String format(int num) {
return NumberFormat.getInstance().format(num);
}
public static String ucFirst(String str) {
str = str.toLowerCase();
if (str.length() > 1) {
str = str.substring(0, 1).toUpperCase() + str.substring(1);
} else {
return str.toUpperCase();
}
return str;
}
public static void print_debug(String str) {
System.out.print(str);
}
public static void println_debug(String str) {
System.out.println(str);
}
public static void print(String str) {
System.out.print(str);
}
public static void println(String str) {
System.out.println(str);
}
public static String Hex(byte data[]) {
return Hex(data, 0, data.length);
}
public static String Hex(byte data[], int offset, int len) {
String temp = "";
for (int cntr = 0; cntr < len; cntr++) {
int num = data[offset + cntr] & 0xFF;
String myStr;
if (num < 16)
myStr = "0";
else
myStr = "";
temp += myStr + Integer.toHexString(num) + " ";
}
return temp.toUpperCase().trim();
}
public static int hexToInt(byte data[], int offset, int len) {
int temp = 0;
int i = 1000;
for (int cntr = 0; cntr < len; cntr++) {
int num = (data[offset + cntr] & 0xFF) * i;
temp += num;
if (i > 1)
i = i / 1000;
}
return temp;
}
public static String basicEncrypt(String s) {
String toReturn = "";
for (int j = 0; j < s.length(); j++) {
toReturn += (int) s.charAt(j);
}
// System.out.println("Encrypt: " + toReturn);
return toReturn;
}
/**
*
* @param range - range of random number
* @return from 1 to specified range number
*/
public static int random2(int range) {
return (int) ((java.lang.Math.random() * range) + 1);
}
/**
*
* @param range - range from 0 to specified range
* @return from 0 to specified range
*/
public static int random(int range) {
return (int) (java.lang.Math.random() * (range + 1));
}
public static long playerNameToInt64(String s) {
long l = 0L;
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
l *= 37L;
if (c >= 'A' && c <= 'Z')
l += (1 + c) - 65;
else if (c >= 'a' && c <= 'z')
l += (1 + c) - 97;
else if (c >= '0' && c <= '9')
l += (27 + c) - 48;
}
while (l % 37L == 0L && l != 0L)
l /= 37L;
return l;
}
private static char decodeBuf[] = new char[4096];
public static String textUnpack(byte packedData[], int size) {
int idx = 0, highNibble = -1;
for (int i = 0; i < size * 2; i++) {
int val = packedData[i / 2] >> (4 - 4 * (i % 2)) & 0xf;
if (highNibble == -1) {
if (val < 13)
decodeBuf[idx++] = xlateTable[val];
else
highNibble = val;
} else {
decodeBuf[idx++] = xlateTable[((highNibble << 4) + val) - 195];
highNibble = -1;
}
}
return new String(decodeBuf, 0, idx);
}
public static String optimizeText(String s) {
for (int i = 0; i < s.length(); i++) {
if (i == 0) {
s = String.format("%s%s", Character.toUpperCase(s.charAt(0)),
s.substring(1));
}
if (!Character.isLetterOrDigit(s.charAt(i))) {
if (i + 1 < s.length()) {
s = String.format("%s%s%s", s.subSequence(0, i + 1),
Character.toUpperCase(s.charAt(i + 1)),
s.substring(i + 2));
}
}
}
return s;
}
public static void textPack(byte packedData[], java.lang.String text) {
if (text.length() > 80)
text = text.substring(0, 80);
text = text.toLowerCase();
int carryOverNibble = -1;
int ofs = 0;
for (int idx = 0; idx < text.length(); idx++) {
char c = text.charAt(idx);
int tableIdx = 0;
for (int i = 0; i < xlateTable.length; i++) {
if (c == xlateTable[i]) {
tableIdx = i;
break;
}
}
if (tableIdx > 12)
tableIdx += 195;
if (carryOverNibble == -1) {
if (tableIdx < 13)
carryOverNibble = tableIdx;
else
packedData[ofs++] = (byte) (tableIdx);
} else if (tableIdx < 13) {
packedData[ofs++] = (byte) ((carryOverNibble << 4) + tableIdx);
carryOverNibble = -1;
} else {
packedData[ofs++] = (byte) ((carryOverNibble << 4) + (tableIdx >> 4));
carryOverNibble = tableIdx & 0xf;
}
}
if (carryOverNibble != -1)
packedData[ofs++] = (byte) (carryOverNibble << 4);
}
public static char xlateTable[] = { ' ', 'e', 't', 'a', 'o', 'i', 'h', 'n',
's', 'r', 'd', 'l', 'u', 'm', 'w', 'c', 'y', 'f', 'g', 'p', 'b',
'v', 'k', 'x', 'j', 'q', 'z', '0', '1', '2', '3', '4', '5', '6',
'7', '8', '9', ' ', '!', '?', '.', ',', ':', ';', '(', ')', '-',
'&', '*', '\\', '\'', '@', '#', '+', '=', '\243', '$', '%', '"',
'[', ']' };
public static int direction(int srcX, int srcY, int x, int y) {
double dx = (double) x - srcX, dy = (double) y - srcY;
double angle = Math.atan(dy / dx);
angle = Math.toDegrees(angle);
if (Double.isNaN(angle))
return -1;
if (Math.signum(dx) < 0)
angle += 180.0;
return (int) ((((90 - angle) / 22.5) + 16) % 16);
}
public static byte directionDeltaX[] = new byte[] { 0, 1, 1, 1, 0, -1, -1,
-1 };
public static byte directionDeltaY[] = new byte[] { 1, 1, 0, -1, -1, -1, 0,
1 };
public static byte xlateDirectionToClient[] = new byte[] { 1, 2, 4, 7, 6,
5, 3, 0 };
}
答案 0 :(得分：0)