单选题What will be written to the standard output when the following program is run?() public class Q03e4 { public static void main(String args[]) { String space = " "; String composite = space + "hello" + space + space; composite.concat("world");
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单选题
What will be written to the standard output when the following program is run?() public class Q03e4 { public static void main(String args[]) { String space = " "; String composite = space + "hello" + space + space; composite.concat("world"); String trimmed = composite.trim(); System.out.println(trimmed.length()); } }
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