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How to split a string in Java
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@Crowie: javadoc-style.
– BalusC
Aug 1 '13 at 12:04
9
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How do I get into a non-password protected Java keystore or change the password?
I'm trying to import a trusted certificated into the Java cacerts keystore , but I have a problem. I tried to list existing trusted certificates and it seems that the keystore isn't password protected.
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What are “sugar”, “desugar” terms in context of Java 8?
I hear about 'sugaring' and 'desugaring' more often in Java 8, what does these terms mean ? are they conceptual or syntactical.
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Setting JDK in Eclipse
I have two JDKs, for Java 6 and 7.
6 Answers
6
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How to construct a relative path in Java from two absolute paths (or URLs)?
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// relative == "stuff/xyz.dat"
Please note that for file path there's java.nio.file.Path#relativize since Java 1.7, as pointed out by @Jirka Meluzin in the other answer.
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How can I pad an integer with zeros on the left?
How do you left pad an int with zeros when converting to a String in java?
16 Answers
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How to get VM arguments from inside of Java application?
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With this code you can get the JVM arguments:
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
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RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean();
List<String> arguments = runtimeMxBean.getInputArguments();
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What's the difference between == and .equals in Scala?
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Does it also apply when using Java libraries?
– Jus12
Oct 6 '11 at 22:50
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String concatenation: concat() vs “+” operator
...ring b) {
a += b;
return a;
}
}
Now disassemble with javap -c (included in the Sun JDK). You should see a listing including:
java.lang.String cat(java.lang.String, java.lang.String);
Code:
0: new #2; //class java/lang/StringBuilder
3: dup
4: invokespecial ...
Creating java date object from year,month,day
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IBM API designers, JavaScript API designers. Other than that, probably nobody. Note that Calendar is now obsoleted by th the Java 8 java.time API, which does the right thing.
– JB Nizet
Sep 27 '17 at 6:55
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