Index Methods
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public int start(): Returns the start index of the previous match. -
public int start(int group): Returns the start index of the subsequence captured by the given group during the previous match operation. -
public int end(): Returns the offset after the last character matched. -
public int end(int group): Returns the offset after the last character of the subsequence captured by the given group during the previous match operation.
Study Methods
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public boolean lookingAt(): Attempts to match the input sequence, starting at the beginning of the region, against the pattern. -
public boolean find(): Attempts to find the next subsequence of the input sequence that matches the pattern. -
public boolean find(int start): Resets this matcher and then attempts to find the next subsequence of the input sequence that matches the pattern, starting at the specified index. -
public boolean matches(): Attempts to match the entire region against the pattern. （matches要求整个字符串都匹配，而lookingAt不需要）
Replacement Methods
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public String replaceAll(String replacement): Replaces every subsequence of the input sequence that matches the pattern with the given replacement string. -
public String replaceFirst(String replacement): Replaces the first subsequence of the input sequence that matches the pattern with the given replacement string. -
public Matcher appendReplacement(StringBuffer sb, String replacement): Implements a non-terminal append-and-replace step. -
public StringBuffer appendTail(StringBuffer sb): Implements a terminal append-and-replace step.
