append(char c)
StringBuilder append(boolean b)- Appends the string representation of the boolean argument to the sequence.
StringBuilder append(char c)- Appends the string representation of the char argument to this sequence.
StringBuilder append(char[] str)- Appends the string representation of the char array argument to this sequence.
StringBuilder append(char[] str, int offset, int len)- Appends the string representation of a subarray of the char array argument to this sequence.
StringBuilder append(CharSequence s)- Appends the specified character sequence to this Appendable.
StringBuilder append(CharSequence s, int start, int end)- Appends a subsequence of the specified CharSequence to this sequence.
StringBuilder append(double d)- Appends the string representation of the double argument to this sequence.
StringBuilder append(float f)- Appends the string representation of the float argument to this sequence.
StringBuilder append(int i)- Appends the string representation of the int argument to this sequence.
StringBuilder append(long lng)- Appends the string representation of the long argument to this sequence.
StringBuilder append(Object obj)- Appends the string representation of the Object argument.
StringBuilder append(String str)- Appends the specified string to this character sequence.
StringBuilder append(StringBuffer sb)- Appends the specified StringBuffer to this sequence.
StringBuilder appendCodePoint(int codePoint)- Appends the string representation of the codePoint argument to this sequence.
public class Main {
public static void main(String[] argv) {
StringBuilder sb = new StringBuilder();
sb.append("java2s.com");
sb.append(123);
sb.append(1.23);
sb.append(true);
System.out.println(sb.toString());
}
}
The output:
java2s.com1231.23true
public class Main {
public static void main(String[] argv) {
String s1 = "Hello" + ", " + "World";
System.out.println(s1);
// Build a StringBuilder, and append some things to it.
StringBuilder sb2 = new StringBuilder();
sb2.append("Hello");
sb2.append(',');
sb2.append(' ');
sb2.append("World");
StringBuilder sb3 = new StringBuilder().append("Hello").append(',').append(' ').append("World");
System.out.println(sb3.toString());
}
}