20.13

java.lang.StringBuffer

THE PACKAGE JAVA.LANG

20.13 The Class

java.lang.StringBuffer

A string buffer is like a

String

 ( 20.12), but can be modified. At any point in

time it contains some particular sequence of characters, but the length and content

of the sequence can be changed through certain method calls.

public class StringBuffer {

public StringBuffer();

public StringBuffer(int length)

throws NegativeArraySizeException;

public StringBuffer(String str);

public String toString();

public int length();

public void setLength(int newLength)

throws IndexOutOfBoundsException;

public int capacity();

public void ensureCapacity(int minimumCapacity);

public char charAt(int index)

throws IndexOutOfBoundsException;

public void setCharAt(int index, char ch)

throws IndexOutOfBoundsException;

public void getChars(int srcBegin, int srcEnd,

char[] dst, int dstBegin)

throws NullPointerException, IndexOutOfBoundsException;

public StringBuffer append(Object obj);

public StringBuffer append(String str);

public StringBuffer append(char[] str)

throws NullPointerException;

public StringBuffer append(char[] str, int offset, int len)

throws NullPointerException, IndexOutOfBoundsException;

public StringBuffer append(boolean b);

public StringBuffer append(char c);

public StringBuffer append(int i);

public StringBuffer append(long l);

public StringBuffer append(float f);

public StringBuffer append(double d);

public StringBuffer insert(int offset, Object obj)

throws IndexOutOfBoundsException;

public StringBuffer insert(int offset, String str)

throws IndexOutOfBoundsException;

public StringBuffer insert(int offset, char[] str)

throws NullPointerException, IndexOutOfBoundsException;

public StringBuffer insert(int offset, boolean b)

throws IndexOutOfBoundsException;

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