how to remove spaces in a string java 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 space string java

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

Example 4: java remove space at the end of string

String str = "Hello ";
System.out.println(str.trim()); // "Hello"