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add a few String methods

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Zsombor 2008-07-13 20:34:13 -06:00 committed by Joel Dice
parent 4fed24270b
commit 17a42c5611
1 changed files with 25 additions and 8 deletions
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33
classpath/java/lang/String.java
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@ -11,6 +11,7 @@
package java.lang; package java.lang;
import java.io.UnsupportedEncodingException; import java.io.UnsupportedEncodingException;
import java.util.regex.Pattern;
public final class String implements Comparable<String>, CharSequence { public final class String implements Comparable<String>, CharSequence {
private Object data; private Object data;
@ -199,14 +200,8 @@ public final class String implements Comparable<String>, CharSequence {
return -1; return -1;
} }
public int lastIndexOf(int c) { public int lastIndexOf(int ch) {
for (int i = length - 1; i >= 0; --i) { return lastIndexOf(ch, length-1);
if (charAt(i) == c) {
return i;
}
}
return -1;
} }
public int indexOf(String s) { public int indexOf(String s) {
@ -303,6 +298,14 @@ public final class String implements Comparable<String>, CharSequence {
} }
} }
public boolean startsWith(String s, int start) {
if (length >= s.length + start) {
return substring(start, s.length).compareTo(s) == 0;
} else {
return false;
}
}
public boolean endsWith(String s) { public boolean endsWith(String s) {
if (length >= s.length) { if (length >= s.length) {
return substring(length - s.length).compareTo(s) == 0; return substring(length - s.length).compareTo(s) == 0;
@ -429,6 +432,10 @@ public final class String implements Comparable<String>, CharSequence {
return substring(start, end); return substring(start, end);
} }
public boolean matches(String regex) {
return Pattern.matches(regex, this);
}
public native String intern(); public native String intern();
public static String valueOf(Object s) { public static String valueOf(Object s) {
@ -466,4 +473,14 @@ public final class String implements Comparable<String>, CharSequence {
public static String valueOf(double v) { public static String valueOf(double v) {
return Double.toString(v); return Double.toString(v);
} }
public int lastIndexOf(int ch, int lastIndex) {
for (int i = lastIndex ; i >= 0; --i) {
if (charAt(i) == ch) {
return i;
}
}
return -1;
}
} }