java removing spaces from string code example

Example 1: how to remove all whitespace from string java

st = st.replaceAll("\\s+","")

Example 2: java 8 remove spaces from string

a.replaceAll("\\s+","");

Example 3: remove spaces at beginning and end of string java

String withSpaces = "  Hi  ";
String withoutSpaces = withSpaces.trim();

Example 4: remove space string java

a = a.replaceAll("\\s+", "");